Retain brightness with lighting layers (#13025)

Add guard `RGBLIGHT_LAYERS_RETAIN_VAL` to retain the currently used val
when applying lighting layers.

Merge remote-tracking branch 'origin/master' into develop

[Keyboard] Add keypad Satxri6key (#13423)

Co-authored-by: Ryan <fauxpark@gmail.com>

Merge remote-tracking branch 'origin/master' into develop

[Keyboard] Initial Tron Guy Labs keyboard implementation. (#13438)

Co-authored-by: Drashna Jaelre <drashna@live.com>
Co-authored-by: Ryan <fauxpark@gmail.com>
Co-authored-by: Jay Maynard <jmaynard@conmicro.com>

Merge remote-tracking branch 'origin/master' into develop

[Keyboard] Add Ristretto Keyboard (#13479)

Co-authored-by: Drashna Jaelre <drashna@live.com>
Co-authored-by: Ryan <fauxpark@gmail.com>
Co-authored-by: Brandon Lewis <blewis308@users.noreply.github.com>

Merge remote-tracking branch 'origin/master' into develop

[Keyboard] New Keyboard - OBE (#13545)

Co-authored-by: Ryan <fauxpark@gmail.com>
Co-authored-by: Drashna Jaelre <drashna@live.com>

Merge remote-tracking branch 'origin/master' into develop

[Keyboard] Add personal planck keymap (#13635)

Merge remote-tracking branch 'origin/master' into develop

[Keymap] narze/xd004 (#13634)

Co-authored-by: Ryan <fauxpark@gmail.com>

Merge remote-tracking branch 'origin/master' into develop

[Keyboard] Add h0oni hotduck keyboard (#13609)

Merge remote-tracking branch 'origin/master' into develop

Fix API generation failure caused by GRS-70EC (#13631)

Fix MATRIX_COLS for peranekofactory/tone (#13632)

Merge remote-tracking branch 'origin/master' into develop

Fix MATRIX_COLS for aeboards/constellation/rev2 (#13633)