* Migrate from Black to Ruff and reformat code with enabling additional linter checks
* Add changelog for migration to Ruff as formatter and linter
* Add type ignores for specific attributes and replace tuple with set for chat type check
* Remove file from another changes
* Add multi-file bot example
This commit adds a multi-file bot example to the repository. .
* Refactor: Clean up code formatting for consistency
* add Changelog
* Refactor bot code, fix changelog version