[Keymap] Add personal massdrop/ctrl:r-pufky keymap. (#10887)

* Add personal massdrop/ctrl:r-pufky keymap.

* Added personal keymap per: https://docs.qmk.fm/#/contributing?id=keymaps

* Update massdrop/ctrl:r-pufky per review.

* Trimmed config.h
* Remove rules.mk
* Add copyright header to keymap.c
* Rename README.md to readme.md

* Remove files/lines per review.

* Removed keyboard-layout-editor.com json layouts.
* Removed keymap_config line.

keyboards/massdrop/ctrl/keymaps/r-pufky/readme.md

@@ -0,0 +1,33 @@
+# Massdrop Ctrl r-pufky
+
+Gaming QOL improvments; enabling useful keys for left hand & in-game overlay usage.
+
+## Layers
+
+### Typing Layer
+
+![Typing Layer](https://i.imgur.com/qEBaupV.png)
+
+Layer optimized to enable useful keys for gaming without changing typing state, as well as specific
+in-game overlay keys.
+
+* Left Ctrl: Easier control key usage without always setting capslock.
+* Num Lock: Unique non visible character key for additional left-hand input options in game.
+* Fn: Enable layer 1, temporal.
+* F24: Unique non-visible F24 key; no windows function. Map to in-game overlays.
+ 
+### Function Layer
+
+![Function Layer](https://i.imgur.com/UhcS0hV.png)
+
+* Purple: Media keys. Note CD Eject on Escape, and OSX Prev/Next on Arrows.
+* Blue: Keyboard adminstration. Toggle NKRO (N Key Rollover) and enable bootloader.
+* Orange: RGB Controls.
+* Red: Danger can break things! USB autodetect (always on) and USB GCR Auto control. 
+* Capslock: Now requires the use of the function key.
+* F13-F14: Extended function keys.
+* Bright+/-: Monitor Brightness.
+
+## GCR
+GCR is the Global Current Register. Holds the value for current delivered to the LEDs, it's 165
+default and has range 0-255. This should be auto managed.