[Keyboard] add miller/gm-862 keyboard (#8230)

* add miller/gm-862 keyboard

* Update keyboards/miller/gm862/gm862.c

* Update keyboards/miller/gm862/gm862.h

* Update keyboards/miller/gm862/gm862.h

* Update keyboards/miller/gm862/readme.md

* Update keyboards/miller/gm862/readme.md

* Update keyboards/miller/gm862/readme.md

* Update keyboards/miller/gm862/readme.md

* Update config.h

* Update keyboards/miller/gm862/config.h

* Update keyboards/miller/gm862/readme.md

keyboards/miller/gm862/config.h

@@ -0,0 +1,63 @@
+#pragma once
+
+#include "config_common.h"
+
+/* USB Device descriptor parameter */
+#define VENDOR_ID       0x4B42
+#define PRODUCT_ID      0x0223
+#define DEVICE_VER      0x0001
+#define MANUFACTURER    MILLER
+#define PRODUCT         GM862
+#define DESCRIPTION     GM862 AVR RGB keyboard
+
+/* key matrix size */
+#define MATRIX_ROWS 5
+#define MATRIX_COLS 14
+/*
+ * Keyboard Matrix Assignments
+ *
+ * Change this to how you wired your keyboard
+ * COLS: AVR pins used for columns, left to right
+ * ROWS: AVR pins used for rows, top to bottom
+ * DIODE_DIRECTION: COL2ROW = COL = Anode (+), ROW = Cathode (-, marked on diode)
+ *                  ROW2COL = ROW = Anode (+), COL = Cathode (-, marked on diode)
+ *
+ */
+#define MATRIX_ROW_PINS {F0, F1, F4, F5, B4}
+#define MATRIX_COL_PINS {B5, B6, C6, C7, F7, F6, B0, B1, B2, B3, B7, D2, D3, D5 }
+#define UNUSED_PINS
+/* COL2ROW, ROW2COL*/
+#define DIODE_DIRECTION COL2ROW
+/* disable these deprecated features by default */
+#ifndef LINK_TIME_OPTIMIZATION_ENABLE
+#    define NO_ACTION_MACRO
+#    define NO_ACTION_FUNCTION
+#endif
+/* Debounce reduces chatter (unintended double-presses) - set 0 if debouncing is not needed */
+#define DEBOUNCE 3
+#ifdef RGB_MATRIX_ENABLE
+#    define RGB_DISABLE_AFTER_TIMEOUT 0 // number of ticks to wait until disabling effects
+#    define RGB_DISABLE_WHEN_USB_SUSPENDED true // turn off effects when suspended
+#    define RGB_MATRIX_KEYPRESSES
+#    define RGB_MATRIX_FRAMEBUFFER_EFFECTS
+#    define DISABLE_RGB_MATRIX_GRADIENT_UP_DOWN	
+#    define DISABLE_RGB_MATRIX_BAND_SAT
+#    define DISABLE_RGB_MATRIX_BAND_PINWHEEL_SAT
+#    define DISABLE_RGB_MATRIX_BAND_SPIRAL_SAT
+#    define DISABLE_RGB_MATRIX_SOLID_REACTIVE_WIDE
+#    define DISABLE_RGB_MATRIX_SOLID_REACTIVE_MULTIWIDE
+#    define DISABLE_RGB_MATRIX_SOLID_REACTIVE_CROSS
+#    define DISABLE_RGB_MATRIX_SOLID_REACTIVE_MULTICROSS
+#    define DISABLE_RGB_MATRIX_SOLID_REACTIVE_NEXUS
+#    define DISABLE_RGB_MATRIX_SOLID_REACTIVE_MULTINEXUS
+#    define DISABLE_RGB_MATRIX_SPLASH
+#    define DISABLE_RGB_MATRIX_MULTISPLASH
+#    define DISABLE_RGB_MATRIX_SOLID_SPLASH
+#    define DISABLE_RGB_MATRIX_SOLID_MULTISPLASH
+#    define DISABLE_RGB_MATRIX_DIGITAL_RAIN
+#    define DRIVER_ADDR_1 0b1010000
+#    define DRIVER_ADDR_2 0b1010000 // this is here for compliancy reasons.
+#    define DRIVER_COUNT 2
+#    define DRIVER_1_LED_TOTAL 62
+#    define DRIVER_LED_TOTAL DRIVER_1_LED_TOTAL
+#endif