[Keyboard] Add support for THE50 (#4844)

* Add support for THE50

A 50% custom keyboard designed and produced by LazyDesigners

* THE50 code-improvement

Implement the changes suggested by noroadsleft.

keyboards/lazydesigners/the50/config.h

@@ -0,0 +1,49 @@
+#pragma once
+
+#include "config_common.h"
+
+/* USB Device descriptor parameter */
+#define VENDOR_ID       0xFEED
+#define PRODUCT_ID      0x0050
+#define DEVICE_VER      0x0001
+#define MANUFACTURER    LazyDesigners
+#define PRODUCT         THE50
+#define DESCRIPTION     A 50% keyboard
+
+/* key matrix size */
+#define MATRIX_ROWS 4
+#define MATRIX_COLS 15
+
+/* key matrix pins */
+#define MATRIX_ROW_PINS { B0, B1, B2, B3 }
+#define MATRIX_COL_PINS { B5, D0, D1, D2, D3, D4, D5, D6, D7, C6, C7, F4, F5, F6, F7 }
+#define UNUSED_PINS
+
+/* COL2ROW or ROW2COL */
+#define DIODE_DIRECTION COL2ROW
+
+/* number of backlight levels */
+#define BACKLIGHT_PIN B6
+#ifdef BACKLIGHT_PIN
+#define BACKLIGHT_LEVELS 6
+#endif
+
+/* Set 0 if debouncing isn't needed */
+#define DEBOUNCING_DELAY 5
+
+/* Mechanical locking support. Use KC_LCAP, KC_LNUM or KC_LSCR instead in keymap */
+#define LOCKING_SUPPORT_ENABLE
+
+/* Locking resynchronize hack */
+#define LOCKING_RESYNC_ENABLE
+
+/* key combination for command */
+#define IS_COMMAND() ( \
+    keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
+)
+
+#define RGB_DI_PIN E6
+#ifdef RGB_DI_PIN
+#define RGBLED_NUM 1
+#define RGBLIGHT_SLEEP
+#endif