API Endpoints for Agency, Agent, Tool Configuration; Refactoring and …

…Testing (#15)

- Add API endpoints:
  - /agent/config: GET, PUT for reading / updating agent configuration
  - tool:
    - /tool/config: GET, PUT for reading & updating tool configuration
    - /tool/approve endpoint to approve the code
- Separate Agent configuration from Agency configuration (a lot of changes due to massive refactoring required to support this)
- Separate business logic from data storage concerns, remove all storage operations from Pydantic models, move them to the repository layer. 

- Improve Testing
  - Increased test coverage from 72% to 81% while adding a lot of code. Aiming at covering 100% of the new code
  - Tested all functionality (except tool endpoints, they are not integrated yet) manually in Postman.
  
The latest API docs are here: https://api.ainhand.com/docs

.github/workflows/test.yml

@@ -24,7 +24,7 @@ jobs:
           python-version: ${{ matrix.python-version }}
           cache: 'poetry'
       - run: poetry install
-      - run: poetry run pytest --cov=src --cov-report=xml
+      - run: poetry run pytest --cov=nalgonda --cov-report=xml
       - name: Upload coverage reports to Codecov
         uses: codecov/codecov-action@v3
         env:

.gitignore

@@ -162,4 +162,5 @@ cython_debug/
 .idea/
 
 settings.json
-config.json
+
+.env