Console support WIP!

Some instabilities to tackle. BT Ring buffer were taken out.  DAC is
crashing with stack overflow.  So does A2DP after playing for a little
while.  This needs to be investigated.

components/platform_esp32/cmd_squeezelite.h

@@ -0,0 +1,13 @@
+#pragma once
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+// Register WiFi functions
+void register_squeezelite();
+
+#ifdef __cplusplus
+}
+#endif
+