Refactoring

[heitorpolidoro]

• Use Polidoro Config #231

• Change the webhook.handler_with_flask for FlaskHandler #230

• Try use pydantic #204

• Ruff #217

• MyPy #216

• read config file from current branch #200

• read config file from .github repository #199

• Update README #225

[bartholomew-smith]

Job's done