Feature: send heartbeats while typing, not just on save with the VSCode Plugin

[lindenkurtz]

Right now, the VSCode plugin only sends heartbeats when a file is saved. I mocked up a draft on my fork that tracks typing as well, sending a heartbeat if the user types or saves, and a heartbeat hasn't been sent in the last two minutes. Let me know if this fits w/ the projects and if I should make a pr with it.

[github-actions]

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[Rtarun3606k]

The benefit of tracking what's being typed alongside file saves is an enhancement. Those who record only file saves leave out a large amount of active coding time (for example, debugging a piece of code or entering a large block of text without saving it), but the ability to listen for keystrokes after a two-minute interval is a perfect solution. Please submit your PR for this!