RGBLight: Allow configurable default settings

[fauxpark]

Description

Types of Changes

• Core
• Bugfix
• New feature
• Enhancement/optimization
• Keyboard (addition or update)
• Keymap/layout/userspace (addition or update)
• Documentation

Issues Fixed or Closed by This PR

Checklist

• My code follows the code style of this project: C, Python
• I have read the PR Checklist document and have made the appropriate changes.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• I have tested the changes and verified that they work and don't break anything (as well as I can manage).

[spidey3]

Nice!

[spidey3]

I just tried this out in my userspace, and found that there is a problem: the RGBLIGHT_MODE_... macros are not defined yet at the time that config.h is parsed, making it impossible to define RGBLIGHT_DEFAULT_MODE. The only workaround I could find was to #include "rgblight.h" in config.h before defining RGBLIGHT_DEFAULT_MODE, but after defining any RGBLIGHT_EFFECT... macros.

[spidey3]

I just tried this out in my userspace, and found that there is a problem...

Never mind. It turned out to be a typo in my code.