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/nvs_utilities.h

@@ -0,0 +1,13 @@
+#pragma once
+#include "esp_err.h"
+#include "nvs.h"
+#ifdef __cplusplus
+extern "C" {
+#endif
+esp_err_t store_nvs_value_len(nvs_type_t type, const char *key, void * data, size_t data_len);
+esp_err_t store_nvs_value(nvs_type_t type, const char *key, void * data);
+esp_err_t get_nvs_value(nvs_type_t type, const char *key, void*value, const uint8_t buf_size);
+void * get_nvs_value_alloc(nvs_type_t type, const char *key);
+#ifdef __cplusplus
+}
+#endif