[Keymap] Custom preonic layout optimised for programming (#8263)

* my new layout, draft one, untested.

* updated mapping to include more keys

* updated layout name to be more descriptive. Updated readme with more information.

* added more info to the readme and spellchecked it.

* Added the Json for the keyboard layout images and updated the readme to reflect this.

* Updated Image link

Updated Image link so that it links to the correct place

* updated copyright info to include MY name.

* Updated copyright attribuatation to include the author of the file I modified.

* added the backlighting key back to the adjust layer so that it is usable.

* updated the name of the keymap to match my github name.

keyboards/preonic/keymaps/AlexDaigre/keyboard-layout-editor/adjust.json

@@ -0,0 +1,80 @@
+[
+  {
+    "name": "Plank Don Gato Programming Raise Layer"
+  },
+  [
+    {
+      "a": 7
+    },
+    "F1",
+    "F2",
+    "F3",
+    "F4",
+    "F5",
+    "F6",
+    "F7",
+    "F8",
+    "F9",
+    "F10",
+    "F11",
+    "F12"
+  ],
+  [
+    "",
+    "Reset",
+    "Debug",
+    "",
+    "",
+    "",
+    "",
+    "Term On",
+    "Term Off",
+    "",
+    "",
+    ""
+  ],
+  [
+    "",
+    "",
+    "Mu Mod",
+    "Audio On",
+    "Audio Off",
+    "AG Norm",
+    "AG Swap",
+    "Qwerty",
+    "Colemak",
+    "Dvorak",
+    "",
+    ""
+  ],
+  [
+    "",
+    "Voice -",
+    "Voice +",
+    "Music On",
+    "Music Off",
+    "",
+    "",
+    "",
+    "",
+    "",
+    "",
+    ""
+  ],
+  [
+    "",
+    "",
+    "",
+    "",
+    "",
+    {
+      "w": 2
+    },
+    "",
+    "",
+    "Next",
+    "Vol -",
+    "Vol +",
+    "Play"
+  ]
+]