[Keymap] Personal keymap for crkbd (#16546)

keyboards/crkbd/keymaps/jpe230/readme.md

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+# Jpe230's CRKBD Layout
+
+## Layers
+The four layers:
+- BASE Layer: QWERTY
+- LOWER Layer: Numbers + Arrows
+- RAISE Layer: Symbols
+- ADJUST Layer: Numpad + Media Keys + Fn keys
+
+## OLED
+-Master: Renders layer state + keylog
+-Slave : Renders an animation of a cat that varies its animation speed based on the current WPM
+
+## Flashing
+Flash using `qmk compile -kb crkbd -km jpe230` for Pro Micro