implement a draft JSON API with FastAPI

[rouk1]

A new webapp is now available in the src/mandr/dashboard package.

In src/mandr/dashboard__init__.py a helper function is available to launch a dashboard from the notebook.
It will start an async task that serves HTTP requests in the background.

from mandr.dashboard import launch_dashboard

launch_dashboard()

You may also run the webapp in it's dedicated interpreter by running: python -m uvicorn mandr.dashboard.webapp:app --reload --host 0.0.0.0 --timeout-graceful-shutdown 0

Two JSON endpoints have been implemented:

• GET /mandrs to list all existing mandrs path below the root project folder
• GET /mandrs/{path} to get a JSON serialized mandr (http://localhost:8000/mandrs/probabl-ai/demo-usecase/training/0)

This first step opens the possibility to write a static JS webapp that consumes this API.

It also raises some questions ❓ :

• Is the naive implementation of a JSONInfoManderEncoder powerful enough ?
• I add to customize the root path for test purpose. How do we let the user change is root path for the dashboard and the python API ? (environment variables ? bootstrap function ? CLI ?)

[tuscland]

Good minimalistic starting point.