RPC: Implement storage_stat_request (#800)

* RPC: Update protobuf sources
* RPC: Implement storage_stat_request
* RPC: Test storage_stat_request
* FuriRecord: fix use after free in destroy method.
* Furi: refactor PubSub and it's usage. Fix allocation in RPC.
* FuriCore: fix memory leak in pubsub
* FuriCore: update unsubscribe method signature in pubsub, make subscription structure lighter.
* FuriCore: remove dead code

Co-authored-by: Aleksandr Kutuzov <alleteam@gmail.com>

lib/common-api/task-control-block.h

@@ -1,7 +1,7 @@
 #pragma once
 
-#include "FreeRTOS.h"
-
+#include <FreeRTOS.h>
+#include <task.h>
 
 typedef struct 			/* The old naming convention is used to prevent breaking kernel aware debuggers. */
 {