* Update MODERN_DOLCH_RED color
* Remove unused RAL_LAL tap dance
* Disable Space Cadet on all boards
* Rework SEND_STRING_CLEAN into CLEAN_MODS, fix DST_P_R/DST_N_A
* Disable unnecessary underglow animations
* Rearrange feature flags in rules.mk files
* Change custom colors from structs to defines
* Add some explicit initializers
* Add MODERN_DOLCH_CYAN color
* Add IS_LAYER_ON_STATE()/IS_LAYER_OFF_STATE() macros
* Add led_set_keymap() template function
* Change underglow color based on Caps/Fn state
* Preserve val when changing underglow colors
* Only trigger Fn light for Fn layer
* Refactor fn_light() and caps_light() slightly
* Add comments to fn_light() and caps_light()
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