Example ipc (#60)

* add blank example

* add ipc example code, need to change FURI API

* add ipc example code, need to change FURI API

* change core API, add context

* check handler at take

* fix important bugs in furi

* drawing example

* add posix mq

* fix unsigned demo counter

* create at open

* working local demo

* russian version of IPC example

* english version

* add gif

core/flipper.h

@@ -1,3 +1,5 @@
+#pragma once
+
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -6,6 +8,7 @@ extern "C" {
     #include "flipper_hal.h"
     #include "cmsis_os.h"
     #include "furi.h"
+    #include "log.h"
 
 #ifdef __cplusplus
 }