[Keymap] Jarred's Plaid keymap (#6049)

* Add my plaid keymap

* Move planck / plaid keymaps to common layout folder

layouts/community/ortho_4x12/jarred/keymap.c

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+#include QMK_KEYBOARD_H
+#include "jarred.h"
+
+#define LAYOUT_ortho_4x12_wrapper(...) LAYOUT_ortho_4x12(__VA_ARGS__)
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    [_QW] = LAYOUT_ortho_4x12_wrapper(QWERTY_4x12),
+    [_GAME] = LAYOUT_ortho_4x12_wrapper(GAME_4x12),
+    [_LW] = LAYOUT_ortho_4x12_wrapper(LOWER_4x12),
+    [_NV] = LAYOUT_ortho_4x12_wrapper(NAV_4x12),
+    [_NP] = LAYOUT_ortho_4x12_wrapper(NUMPAD_4x12),
+    [_MS] = LAYOUT_ortho_4x12_wrapper(MOUSE_4x12)
+};
+
+#ifdef RGB_MATRIX_ENABLE
+void rgb_matrix_indicators_user(void) {
+    #ifdef KEYBOARD_planck_light
+    // Disable light in middle of 2U position of Planck Light
+    rgb_matrix_set_color(42, 0, 0, 0);
+    #endif
+}
+#endif

layouts/community/ortho_4x12/jarred/readme.md

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+# Jarred's ortho 4x12 keymap
+
+[User space](../../../../users/jarred/readme.md)
+
+Boards used on:
+- [Planck](../../../../keyboards/planck/readme.md)
+- [Plaid](../../../../keyboards/plaid/readme.md)
+
+# Plaid build notes
+
+Enter Bootloader:
+Press Reset / Press Boot / Release Reset / Release Boot
+
+Install libusbK driver for usbasp:
+https://zadig.akeo.ie/
+
+make plaid:jarred:program
+
+Press Reset
+
+https://github.com/hsgw/plaid/blob/master/doc/en/bootloader.md
+https://github.com/hsgw/plaid/blob/master/doc/en/firmware.md