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>

applications/gui/gui.c

@@ -410,7 +410,7 @@ Gui* gui_alloc() {
     gui->input_queue = osMessageQueueNew(8, sizeof(InputEvent), NULL);
     gui->input_events = furi_record_open("input_events");
     furi_check(gui->input_events);
-    subscribe_pubsub(gui->input_events, gui_input_events_callback, gui);
+    furi_pubsub_subscribe(gui->input_events, gui_input_events_callback, gui);
     // Cli
     gui->cli = furi_record_open("cli");
     cli_add_command(

applications/gui/gui_i.h

@@ -50,7 +50,7 @@ struct Gui {
 
     // Input
     osMessageQueueId_t input_queue;
-    PubSub* input_events;
+    FuriPubSub* input_events;
     uint8_t ongoing_input;
     ViewPort* ongoing_input_view_port;
 

applications/gui/icon_animation.c

@@ -2,7 +2,6 @@
 #include "icon_i.h"
 
 #include <furi.h>
-#include <timers.h>
 
 IconAnimation* icon_animation_alloc(const Icon* icon) {
     furi_assert(icon);