[Keymap] Add missing tap dance action and fix RGB hues in personal keymaps (#6312)
* Add missing TD_RSF_RCT tap dance
* Use standard QMK HSV and RGB structs, fix Godspeed colors
* Move PROGMEM after the type in RGB intervals
* Add MODERN_DOLCH_RED color, use it on KBD6X
* Use 255 instead of RGBLIGHT_LIMIT_VAL in color definitions
* Remove IS_COMMAND override on Whitefox