Refresh Postman documentation

[alexmerlin]

Feature Request

Since the API routes have been refactored in #385, the endpoints in existing Postman collection are no longer functional.
The goal of this issue is to refresh the existing environment and collection files.

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Tasks:

• Install Postman
• Import Dotkernel project files
• Update existing requests by following the modifications in Issue #384: Refactored handlers #385
• Export environment file and replace the existing environment file with it
• Export collection file and replace the existing collection file with it

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Q	A
New Feature	yes
RFC	no
BC Break	no

[alexmerlin]

Implemented in #400