Tidying up for future changes

- Changelog started. Existing version 0.0.2
- Add section for application wide TODOs. Each moved to changelog when done
- Adjusted .gitignore and .dockerignore
- Updated image base to python:3.10-slim-trixie. Cleaned up image build.
- Added default environment values to compose file
- Cleaned up pyproject.toml.
- Deleted unused gui-tk.py.

docker-compose.yaml

@@ -13,6 +13,9 @@ services:
             - /home/doc/src/my/subdomain_server/config:/app/config:ro
         environment:
             - AUTH_FILE=/app/config/config.yaml
+            - LOG_LEVEL=DEBUG
+            - PORT=5232
+            - BINDING=0.0.0.0
         restart: always
 
 networks: