hardware: Added wifi, removed 2nd MCU, most of the PCB layout.

hardware/base/base.kicad_pro

       },
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     [
-      "bae9ff6d-7b10-4099-9c51-b92b6161b62a",
-      "Line-In + SPDIF"
+      "47ee73fa-f28f-408a-829e-e8c3a891ec70",
+      "Wireless"
     ]
   ],
   "text_variables": {}

hardware/base/headphone-amp.kicad_sch

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hardware/base/linein.kicad_sch

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 )

hardware/base/power-supply.kicad_sch

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