[FL-2705] App RPC Bug Fixes and redesign (#1491)

* Rpc: remove callback timer
* Rpc: simplify rpc event callback
* Rpc: migrate to new confirmation schema
* Rpc: migrate to new confirmation schema part2: finalize ibutton and rfid
* Rpc: migrate to new confirmation schema part3: finallize nfc and fix id in load
* Rpc: hardened sequencing check
* Rpc: migrate to new confirmation schema part4: finalize subghz
* iButton: properly handle exit
* Nfc: correct sequence for rpc exit send
* Rpc: fix review issues and nfc exit message
* Rpc: more logging and condition race fix in confirmation
* Rpc: migrate to new confirmation schema part5: finalize infrared
* Rpc: more logging

applications/lfrfid/lfrfid_app.h

@@ -33,6 +33,8 @@ public:
         Retry,
         Exit,
         EmulateStart,
+        RpcLoadFile,
+        RpcSessionClose,
     };
 
     enum class SceneType : uint8_t {