[Keymap] Crkbd/thunderbird2086 (#16973)

* crkbd:thunderbird2086

* readme

* after code review

* coding format

* minor change

* changed file name

* correct image

* updated readme

* using query to get rgb status

* minor update

keyboards/crkbd/keymaps/thunderbird2086/readme.md

@@ -0,0 +1,65 @@
+# Thunderbird2086's custom CRKBD Layout
+
+The concept is Mac and **baby finger** friendly keymap.
+
+## Layers
+- Colemak-DH: base layer. The option(⌥) and command(⌘) keys are assigned to thumb blocks as well as home position keys on each side.  Also, far end two columns are assigned to shift(⇧) and control(⌃) keys.
+  ![colemak-dh](https://i.imgur.com/R7EzTTt.png)
+  - Thumb keys
+    | Tap         |  Double tap           |  Long tap        |
+    | ---         | ---                   |  ---             |
+    | Command(⌘)  | Command(⌘) + Space(␣) |                  |
+    | Delete(⌦)   |                       |  Function layer  |
+    | Backspace(⌫)|                       |  Function layer  |
+    | Space(␣)    |                       |  Code layer      |
+    | Enter(⏎)    |                       |  Code layer      |
+  - Staggered keys
+    | Tap         |  Double tap           |  Long tap        |
+    | ---         | ---                   |  ---             |
+    | TAB         | Control(⌃) + TAB      |                  |
+    | a           |                       |  Control(⌃)      |
+    | z           |                       |  Shift(⇧)        |
+    | t           |                       |  Option(⌥)       |
+    | n           |                       |  Command(⌘)      |
+    | o           |                       |  Control(⌃)      |
+    | '           |                       |  Control(⌃)      |
+    | /           |                       |  Shift(⇧)        |
+    | =           |                       |  Adjust layer    |
+
+- QWERTY: same as Colemak-DH layer
+  ![qwery](https://i.imgur.com/v9JBwQu.png)
+  - Thumb keys : same as Colemak-DH
+  - Staggered keys : almost same as Colemak-DH except
+    | Tap         |  Double tap           |  Long tap        |
+    | ---         | ---                   |  ---             |
+    | f           |                       |  Option(⌥)       |
+    | j           |                       |  Command(⌘)      |
+    | ;           |                       |  Control(⌃)      |
+
+- CODE: numbers and symbols.  
+  ![symbol](https://i.imgur.com/BPgPlYX.png)
+  - Thumb keys
+    | Tap         |  Double tap           |  Long tap        |
+    | ---         | ---                   |  ---             |
+    | ESC         | Caps lock             |                  |
+  - Staggered keys
+    | Tap         |  Double tap           |  Long tap        |
+    | ---         | ---                   |  ---             |
+    | `           | Command(⌘) + `        |                  |
+
+- FUNCTION: function, meadia and navigation keys 
+  ![function](https://i.imgur.com/cs5haUP.png)
+  - Thumb keys
+    | Tap         |  Double tap           |  Long tap        |
+    | ---         | ---                   |  ---             |
+    | ESC         | Caps lock             |                  |
+
+- ADJUST: RGB control, Power control, default layer setting and reset
+  ![adjust](https://i.imgur.com/uDIhigd.png)
+- SECRET: hold `ADJUST` and `FUNCTION` to activate
+
+## Custom OLED
+This keymap includes custom OLED font and code. The font contains some logos and status indidcators from [gotham](../gotham) and [soundmonster](../soundmonster) including my own CAPS LOCK icon.  Enable OLED in rukes.mk to check it out. Feel free to reuse the font or parts of it.
+
+## Flashing
+Flash using `make crkbd:thunderbird2086:avrdude` for Pro Micro and `make crkbd:thunderbird2086:dfu` for Elite-C.