New endpoint for receiving UVL files from GitHub

[drorganvidez]

Use case:

• Developer has a Chrome plugin active.
• The plugin enables a button that says ‘Analyse with Flamapy IDE’.
• Flamapy IDE receives a full path like ‘https://github.com/drorganvidez/feature-model-benchmark/blob/master/feature_models/uvl/automotive/automotive01/Kowal2016.uvl’.
• Flamapy IDE loads that UVL into the editor

We need an endpoint to receive a full path from GitHub and load that model.

[sebasruii]

As of current implementation, it is possible to load a model from an only text response. So it is possible to load a model from gitHub by using its "raw" content URL.

For example, if we want to import the model
https://github.com/flamapy/flamapy-ide/blob/main/tests/test_models/uvlfile.uvl

The plugin could take advantage of the raw content URL for the file:
https://raw.githubusercontent.com/flamapy/flamapy-ide/refs/heads/main/tests/test_models/uvlfile.uvl

and import it into flamapyIDE with the following link:
https://ide.flamapy.org/?import=https://raw.githubusercontent.com/flamapy/flamapy-ide/refs/heads/main/tests/test_models/uvlfile.uvl

The raw content URL follows a defined structure, which could be useful for a plugin.