fix code coverage configuration in components to work better in IDEs

[ms-lolo]

code coverage integration with IDEs has always been shaky, but we have a couple working examples across different repos. we should update our pyproject.toml files in rats to shift some of the configuration from tool.coverage.run to tool.pytest.ini_options, because it allows IDEs to better parse the results and show the coverage report in the native IDE ux. i think these changes don't affect the output when running pytest in a terminal.

• the tool.coverage.run section should only have a data_file and relative_files config
  • do not specify branch because it break's the IDE's ability to use branching options
  • do not specify source values, i'm unsure why this breaks things, but it's not necessary
• in tool.pytest.ini_options
  • add a --cov option for each source directory we were previously defining in coverage configs
  • enable --cov-branch

part of this work should also include documentation to explain how to configure your projects in similar ways.