Keymap: Boy_314's Preonic and XD75 Layouts (#3781)

* fixed arrow keys and left control

* added right shift

* latest version

* reverted arrow keys

* edited readme

* added osu layer

* updated osu layout

* updated osu layout

* added full arrow keys to osu layout

* in case i mess up creating macros

* added the best meme key in the world

* added plover steno layer

* updated boy314 layout

* removed unused layers

* added boy314 xd75 layout, inspired by preonic layout

* added boy314 xd75 layout, inspired by preonic layout

* version 2 of boy314's xd75 layout

* added readme notes

* updated readme for boy314 xd75 layout

* qwerty support, brackets on bottom row, caps lock underglow

* fixed readme/

* small changes to allow merging

* minor changes to format

* fixed up default readme

keyboards/xd75/keymaps/boy_314/readme.md

@@ -0,0 +1,8 @@
+# Boy_314's XD75RE Layout
+- Default is DVORAK, FN+N to switch to QWERTY, FN+H to switch to DVORAK (N and H on QWERTY layout)
+- Features many symbols and function keys in secondary layers.
+- Dedicated bracket and braces keys on bottom right 4 keys, useful for programming
+- RGB underglow changes to a fast cycle mode when CAPS LOCK is activated
+- NOTE: WORK IN PROGRESS
+# THINGS TO DO
+- add numpad toggle layer