support ruff configuration in `pyproject.toml`? also option to choose b/w ruff and black

The community member is having trouble getting their ruff configuration to work with the marimo project, as it seems to be defaulting to black formatter. They cannot easily remove black since it is a required dependency. The community members discuss the possibility of making ruff the default formatter over black, as ruff is becoming more widely used. One community member offers to make the contribution by switching the if statement, and another community member confirms that this should work with either ruff.toml or pyproject.toml. The community members also discuss adding additional checks and warnings to the code.