chore: add templated GitHub config files (#12)

Pulled manually from https://github.com/googleapis/synthtool/tree/master/synthtool/gcp/templates/python_library/.github

Change-Id: I7f36912dffb427af2cd388abb8109670ac162701

Author: tswast

.github/CODEOWNERS

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+# Code owners file.
+# This file controls who is tagged for review for any given pull request.
+#
+# For syntax help see:
+# https://help.github.com/en/github/creating-cloning-and-archiving-repositories/about-code-owners#codeowners-syntax
+# Note: This file is autogenerated. To make changes to the codeowner team, please update .repo-metadata.json.
+# @googleapis/yoshi-python @googleapis/api-bigquery-dataframe are the default owners for changes in this repo
+*     @googleapis/yoshi-python @googleapis/api-bigquery-dataframe
+
+# @googleapis/python-samples-reviewers @googleapis/api-bigquery-dataframe are the default owners for samples changes
+/samples/   @googleapis/python-samples-reviewers @googleapis/api-bigquery-dataframe

.github/CONTRIBUTING.md

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+# How to Contribute
+
+We'd love to accept your patches and contributions to this project. There are
+just a few small guidelines you need to follow.
+
+## Contributor License Agreement
+
+Contributions to this project must be accompanied by a Contributor License
+Agreement. You (or your employer) retain the copyright to your contribution;
+this simply gives us permission to use and redistribute your contributions as
+part of the project. Head over to <https://cla.developers.google.com/> to see
+your current agreements on file or to sign a new one.
+
+You generally only need to submit a CLA once, so if you've already submitted one
+(even if it was for a different project), you probably don't need to do it
+again.
+
+## Code reviews
+
+All submissions, including submissions by project members, require review. We
+use GitHub pull requests for this purpose. Consult
+[GitHub Help](https://help.github.com/articles/about-pull-requests/) for more
+information on using pull requests.
+
+## Community Guidelines
+
+This project follows [Google's Open Source Community
+Guidelines](https://opensource.google.com/conduct/).

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: Bug report
+about: Create a report to help us improve
+
+---
+
+Thanks for stopping by to let us know something could be better!
+
+**PLEASE READ**: If you have a support contract with Google, please create an issue in the [support console](https://cloud.google.com/support/) instead of filing on GitHub. This will ensure a timely response.
+
+Please run down the following list and make sure you've tried the usual "quick fixes":
+
+  - Search the issues already opened: https://github.com/googleapis/python-bigquery-dataframes/issues
+  - Search StackOverflow: https://stackoverflow.com/questions/tagged/google-cloud-platform+python
+
+If you are still having issues, please be sure to include as much information as possible:
+
+#### Environment details
+
+  - OS type and version:
+  - Python version: `python --version`
+  - pip version: `pip --version`
+  - `bigframes` version: `pip show bigframes`
+
+#### Steps to reproduce
+
+  1. ?
+  2. ?
+
+#### Code example
+
+```python
+# example
+```
+
+#### Stack trace
+```
+# example
+```
+
+Making sure to follow these steps will guarantee the quickest resolution possible.
+
+Thanks!

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: Feature request
+about: Suggest an idea for this library
+
+---
+
+Thanks for stopping by to let us know something could be better!
+
+**PLEASE READ**: If you have a support contract with Google, please create an issue in the [support console](https://cloud.google.com/support/) instead of filing on GitHub. This will ensure a timely response.
+
+ **Is your feature request related to a problem? Please describe.**
+A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+ **Describe the solution you'd like**
+A clear and concise description of what you want to happen.
+ **Describe alternatives you've considered**
+A clear and concise description of any alternative solutions or features you've considered.
+ **Additional context**
+Add any other context or screenshots about the feature request here.

.github/ISSUE_TEMPLATE/support_request.md

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+---
+name: Support request
+about: If you have a support contract with Google, please create an issue in the Google Cloud Support console.
+
+---
+
+**PLEASE READ**: If you have a support contract with Google, please create an issue in the [support console](https://cloud.google.com/support/) instead of filing on GitHub. This will ensure a timely response.

.github/PULL_REQUEST_TEMPLATE.md

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+Thank you for opening a Pull Request! Before submitting your PR, there are a few things you can do to make sure it goes smoothly:
+- [ ] Make sure to open an issue as a [bug/issue](https://github.com/googleapis/python-bigquery-dataframes/issues/new/choose) before writing your code!  That way we can discuss the change, evaluate designs, and agree on the general idea
+- [ ] Ensure the tests and linter pass
+- [ ] Code coverage does not decrease (if any source code was changed)
+- [ ] Appropriate docs were updated (if necessary)
+
+Fixes #<issue_number_goes_here> 🦕

.github/auto-approve.yml

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+# https://github.com/googleapis/repo-automation-bots/tree/main/packages/auto-approve
+processes:
+  - "OwlBotTemplateChanges"

.github/auto-label.yaml

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+# Copyright 2023 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+requestsize:
+  enabled: true

.github/header-checker-lint.yml

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+{"allowedCopyrightHolders": ["Google LLC"],
+ "allowedLicenses": ["Apache-2.0", "MIT", "BSD-3"],
+ "ignoreFiles": ["**/requirements.txt", "**/requirements-test.txt", "**/__init__.py", "samples/**/constraints.txt", "samples/**/constraints-test.txt"],
+ "sourceFileExtensions": [
+ 	"ts",
+ 	"js",
+ 	"java",
+ 	"sh",
+ 	"Dockerfile",
+ 	"yaml",
+ 	"py",
+ 	"html",
+ 	"txt"
+ ]
+}

.github/release-please.yml

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+releaseType: python
+handleGHRelease: true