Durgod keyboard refactor in preparation for adding additional durgod keyboards (#11978)

* Durgod keyboard refactor in preparation for adding additional durgod keyboards

* Moving Durgod board configuration into a common location
* Reformatting layout macro whitespace
* Moving TGUI key functionality to the keyboard level
* Replacing default keymap.c with keymap.json
* Changing default and default_toggle_mac_windows keymaps to LAYOUT_all
* Increasing EEPROM size to support more VIA layers
* Fixing media keys; KC_MRWD/KC_MFFD => KC_MPRV/KC_NXT

* Move ISO Enter key to the correct row in Durgod K320

* Minor whitespace and readme cleanup for K320

* Changing durgod/k320 debounce back to default

* Simplifying DURGOD_STM32_F070's chconf.h

Co-authored-by: Simon Arlott <sa.me.uk>
Co-authored-by: Tyler Tidman <tyler.tidman@draak.ca>

keyboards/durgod/boards/DURGOD_STM32_F070/chconf.h

@@ -0,0 +1,28 @@
+/* Copyright 2020 QMK
+ *
+ * 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/>.
+ */
+
+/*
+ * This file was auto-generated by:
+ *    `qmk chibios-confmigrate -i keyboards/durgod/k320/chconf.h -r platforms/chibios/common/configs/chconf.h`
+ */
+
+#pragma once
+
+#define CH_CFG_ST_FREQUENCY 10000
+
+#define CH_CFG_ST_TIMEDELTA 0
+
+#include_next <chconf.h>