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

wiki/_Sidebar.md

@@ -18,6 +18,7 @@ _please, do not edit wiki directly in web-interface. Read [contrubution guide](C
 
 * [Blink](Blink-app)
 * [UART write](UART-write)
+* [Inter-process communication](IPC-example)
 
 # Hardware