Add bpruitt-goddard Ergodox Layout (#3080)

* Feat: Create personal ergodox keymap

* FEAT: Update bpruitt-goddard keymap with custom layout

* Fix: Remove unused pieces from bpruitt-goddard keyboard

* Feat: Add QWERTY layer to bpruitt-goddard ergodox keymap

* Refactor: Remove unused layers from bpruitt-goddard keymap

* Fix: Update base layer for bpruitt-goddard keymap

* Fix: Remove un-reachable key combo from FN layer

* Fix: Rename FN layer to numpad layer

* Feat: Create one-shot modifier layer for mac os use

* Doc: Update readme to reflect my keymap

* Feat: Add mac desktop space switching

* feat: Update keymap layers to use ergodox pretty format

keyboards/ergodox_ez/keymaps/bpruitt-goddard/readme.md

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+# Ergodox EZ Layout by bpruitt-goddard
+![Layout Image](https://i.imgur.com/kVPmpFG.png)
+
+[KLE link](http://www.keyboard-layout-editor.com/#/gists/5896c5a729a64633d3f63de71e7e0e79)
+
+## Layers
+| Layer | Legend |
+| ----- | ------ |
+| Base  |  Top (black) |
+| Num | Center (blue) |
+| QWERTY | Bottom (Red) |
+| MAC | Front/Bottom-most (Yellow) |
+
+## Features
+* Tap-dance dynamic macro key.
+  * Tap twice for starting macro. Then tap once to complete the macro
+  * Tap one for replaying macro
+* Numpad on right hand with momentary Num layer
+* QWERTY layer for non-dvorak users
+* Mac layer for changing thumbpad modifier keys with Command
+* Uses the following dual function keys
+    * Space Cadet shifts (shift/paren)
+    * Ctrl/Esc