Keyboard/grandiceps (#11933)

* Add Grandiceps keyboard

* Fix info.json

* Fix typo

* Fix typo

* cleanup format

* move mcu files to root

* Updated with PR changes

* Apply suggestions from code review

Co-authored-by: Ryan <fauxpark@gmail.com>

* Apply suggestions from code review

Co-authored-by: Ryan <fauxpark@gmail.com>

* PR issues for chibios confmigrate

* PR Changes

Co-authored-by: Thys de Wet <thys@vectorphoto.co.uk>
Co-authored-by: Ryan <fauxpark@gmail.com>

keyboards/tkw/grandiceps/keymaps/default/readme.md

@@ -0,0 +1,13 @@
+![grandiceps default keymap](https://raw.githubusercontent.com/vattern/grandiceps/master/images/layer0.png)
+![grandiceps adjust layer](https://raw.githubusercontent.com/vattern/grandiceps/master/images/layer4.png)
+
+
+# Default keymap for grandiceps Keyboard
+
+Features:
+
+- Symmetric modifiers (CMD/Super, Alt/Opt, Ctrl, Shift)
+- Various modes, can be switched (using Adjust layer)
+- Modes for Qwerty and Colemak support
+- Modes for Mac vs Linux/Win support -> different order of modifiers and different action shortcuts on the "UPPER" layer .
+- The OLED on master half shows selected mode and caps lock state and is rotated.