[image] Add Invert Colors option

[boussouira]

Description:

This PR add a new configuration variable to to invert the image colors. This is useful when drawing a dark image on dark background for example.

Related issue (if applicable): N/A

Pull request in esphome with YAML changes (if applicable): esphome/esphome#7392

Checklist:

• [x] I am merging into next because this is new documentation that has a matching pull-request in esphome as linked above.
  or

• [ ] I am merging into current because this is a fix, change and/or adjustment in the current documentation and is not for a new component or feature.

• [ ] Link added in /index.rst when creating new documents for new components or cookbook.