Littlefs rebased to Master (#1205)

* Littlefs

src/mesh/mesh-pb-constants.cpp

@@ -1,16 +1,11 @@
 #include "mesh-pb-constants.h"
-#include "FS.h"
+#include "FSCommon.h"
 #include "configuration.h"
 #include <Arduino.h>
 #include <assert.h>
 #include <pb_decode.h>
 #include <pb_encode.h>
 
-#ifdef ARDUINO_ARCH_NRF52
-#include "Adafruit_LittleFS.h"
-using namespace Adafruit_LittleFS_Namespace; // To get File type
-#endif
-
 /// helper function for encoding a record as a protobuf, any failures to encode are fatal and we will panic
 /// returns the encoded packet size
 size_t pb_encode_to_bytes(uint8_t *destbuf, size_t destbufsize, const pb_msgdesc_t *fields, const void *src_struct)
@@ -72,4 +67,4 @@ bool is_in_helper(uint32_t n, const uint32_t *array, pb_size_t count)
             return true;
 
     return false;
-}
+}