Feat/fastapi plugin

[thiarthur]

Creates Integration and FastAPIIntegration

Description

Creates an interface that allows Eolic to receive remote events easily.
The first version implements FastAPI, but it also allows Eolic to integrate with other frameworks in the future.

Type of Change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

1. Unit Tests:

   • Added unit tests for the base integration class tests/integrations/test_base.py.
   • Added unit tests for the FastAPI integration class tests/integrations/test_fastapi.py.
   • Verified that the internal methods are properly called.
   • Verified that the routes of the FastAPI integration are well defined.
   • Ran the tests using pytest to ensure all tests pass.

2. Manual Testing:

   • Ran the example services to ensure that the notification service event handler would be triggered.

     python examples/integrations/fastapi_plugin/notification_service.py

     python examples/integrations/fastapi_plugin/user_service.py

     curl -X POST "http://localhost:8000/users" -H "Content-Type: application/json" -d '{"id": 1, "name": "John Doe", "email": "john@example.com"}'

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules