[Keyboard] Add Durgod Hades, Galaxy and Venus Keyboards (#12893)

Co-authored-by: Drashna Jaelre <drashna@live.com>
Co-authored-by: Don Kjer <don.kjer@gmail.com>

keyboards/durgod/dgk6x/dgk6x.h

@@ -0,0 +1,47 @@
+/* Copyright 2021 Jessica Sullivan and Don Kjer 
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+
+#include "quantum.h"
+
+#ifdef KEYBOARD_durgod_dgk6x_hades
+#   include "hades.h"
+#elif defined KEYBOARD_durgod_dgk6x_venus
+#   include "venus.h"
+#elif defined KEYBOARD_durgod_dgk6x_galaxy
+#   include "galaxy.h"
+#endif
+
+#ifndef WINLOCK_DISABLED
+// Define the TGUI key here so it is available in QMK configurator
+enum DGK6X_keycodes {
+#ifdef VIA_ENABLE
+    KC_TGUI = USER00,   // Toggle between GUI Lock or Unlock
+    NEW_SAFE_RANGE = SAFE_RANGE
+#else
+    KC_TGUI = SAFE_RANGE,   // Toggle between GUI Lock or Unlock
+    NEW_SAFE_RANGE
+#endif
+};
+
+#undef SAFE_RANGE
+#define SAFE_RANGE NEW_SAFE_RANGE
+#endif /* WINLOCK_DISABLED */
+
+/* Function Prototype */
+void off_all_leds(void);
+void on_all_leds(void);
+