[FL-1398] IRDA: Implement timings encoder, add RC-6 (#570)

* Add RC-6 protocol
* Implement timings Encoder
* Remove Unit-tests from build

applications/irda/cli/irda-cli.cpp

@@ -9,7 +9,7 @@
 #include <m-string.h>
 
 typedef struct IrdaCli {
-    IrdaHandler* handler;
+    IrdaDecoderHandler* handler;
     osMessageQueueId_t message_queue;
 } IrdaCli;