Initial commit for the Keyboard Layout Manager

* Implements physical size:
    Full Size
    TKL
    60%
* Implements regional layouts
    ANSI QWERTY
    ISO QWERTY
    QWERTZ
    AZERTY
    JIS
* Customisible layouts produced by adding and swapping custom keys
allowing for keyboard SKU variants
* Exportable matrix maps filled by map count, matrix index or filled by an
array of values.
* Matrix map size adjustable to fixed width and height to support size
specific protocols. e.g. Razer
* Debug keyboards are customisable by adding the following values into
the JSON list.
    "Layout" (int),
    "Size" (int),
    "Linear" (bool),
    "Underglow" (bool),
    "Insert" array[ { "Zone" (int), "Row" (int), "Col" (int), "Val"
(int), "Name": (string) } ],
    "Swap" array[ { "Zone" (int), "Row" (int), "Col" (int), "Val" (int),
"Name": (string) } ]
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