[Keyboard] FLX Lodestone (#8451)

* Add Lodestone PCB

Working Firmware for Lodestone PCB tested on physical PCB prototypes.

* Update keyboards/flx/lodestone/lodestone.c

* Update keyboards/flx/lodestone/keymaps/default/config.h

* Update keyboards/flx/lodestone/rules.mk

* Update keyboards/flx/lodestone/readme.md

* Delete config.h

* Update keyboards/flx/lodestone/info.json

Suggested by noroadsleft

* Update keyboards/flx/lodestone/info.json

* Update keyboards/flx/lodestone/info.json

Changed maintainer name as suggested.

* Update keyboards/flx/lodestone/keymaps/default/readme.md

* Update keyboards/flx/lodestone/info.json

* Update keyboards/flx/lodestone/rules.mk

Changed Link_Time_Optimization to LTO didn't know this was a thing :)

* Update keyboards/flx/lodestone/keymaps/default/keymap.c

Removed 2 unessisary layers from the default map.

* Update keyboards/flx/lodestone/readme.md

* Update keyboards/flx/lodestone/info.json

* Changed from LAYOUT to LAYOUT_all

AS suggested by noroadsleft, changed 4 files to match, and re-testeed on my hardware to confirm working.

* Update keyboards/flx/lodestone/config.h

Cleaned up Manu, Product and Descriptor as suggested.

* Update keyboards/flx/lodestone/readme.md

keyboards/flx/lodestone/lodestone.c

@@ -0,0 +1,17 @@
+/* Copyright 2020 Shaun Mitchell (Flex)
+ *
+ * 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/>.
+ */
+
+#include "lodestone.h"