[Keymap] Drashna's Feature madness (#6128)

* Fix my Tap Dance issues after I broke them

* Cleanup and organization of userspace documentation

As well as some additional cleanup of functions due to review of documentation.

* Enable Tapdance on Glow and remove more animations

* Revert to Eager PR debouncing

* Add better check for startup animation

* Move where RGB Matrix defines are listed

* Limit RGB Matrix max val

* Update keyboard for Iris Rev 3 conflicts

* Enable encoder support on planck ez

* Remove is_master check from corne\'s OLED code

* Overhaul OLED screens for my Corne

* One last removal

* Show RGB valu On both sides

* Updates for OLED display info

* Fix compile issues for rgb config

* Disabled Space Cadet for all drashna keymaps

* Fix OLED Screen configs

* Minor OLED Tweaks

* Revert some Iris changes

* Fix song include

* Handle MAKE macro for the Corne boards better

* Add super hacky-hack for eeconfig initialization

* Add audio support for Fractal since Elite Cs support it

* Add defines for keycode steps

* Add White layout

* Update Corne RGB info

* Add fun effects to layer indication for RGB Matrix enabled boards

* Use proper define for product name detection

* Update formatting

* Use custom timeout mechanism for OLED timeout

* Fix up OLED screen HSV code for new HSV structure

* Better handle turning off RGB Matrix when sleeping

* Disable MultiSplash Animation

* Change Iris back to using serial

* Why was RGB disabled?!?!?!

* Limit val in rgb_matrix_layer_helper function

* Remove EECONFIG setting for RGB matrix

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+## Keyboard Layout Templates
+
+This borrows from @jola5's "Not quite neo" code.  This allows me to maintain blocks of keymaps in the userspace, so that I can modify the userspace, and this is reflected in all of the keyboards that use it, at once.
+
+This makes adding tap/hold mods, or other special keycodes or functions to all keyboards super easy, as it's done to all of them at once. 
+
+The caveat here is that the keymap needs a processor/wrapper, as it doesn't like the substitutions.  However, this is as simple as just pushing it through a define. For instance:
+
+`#define LAYOUT_ergodox_wrapper(...)   LAYOUT_ergodox(__VA_ARGS__)`
+
+Once that's been done and you've switched the keymaps to use the "wrapper", it will read the substitution blocks just fine.