Eager pk/pr optimization (qmk#5621)

* Optimizations to eager_pk

* eager_pr also uses changed boolean now.

Features/ws2812 matrix driver (qmk#5418)

* WS2812 driver implementation for RGB Matrix

* Added driver configuration docs

fix combo enabling logic (qmk#5610)

Change table names

Add vendor and product arguments to atmega32a_program.py - fix hex print

Max out range for max compatibility

Fix build detection of keymap and board changes

Apply MAKEFLAGS to speed up CI

RGB Matrix Overhaul (qmk#5372)

* RGB Matrix overhaul
Breakout of animations to separate files
Integration of optimized int based math lib
Overhaul of rgb_matrix.c and animations for performance

* Updating effect function api for future extensions

* Combined the keypresses || keyreleases define checks into a single define so I stop forgetting it where necessary

* Moving define RGB_MATRIX_KEYREACTIVE_ENABLED earlier in the include chain

Added some new songs (qmk#5525)

Added Fantasie Impromptu and Nocturne Op. 9 No. 1 in B flat minor by Chopin
Added Isabella's Lullaby from The Promised Neverland
Added Renai Circulation and Platinum Disco from Monogatari
Added Terra's theme from Final Fantasy 6