[FL-1505] Add RAW format (#576)

* Add RAW format
* F5 stubs for build to pass
* Fix saving decoded signal error
* Irda: set ISR before starting timer, remove explicit NVIC configuration

Co-authored-by: あく <alleteam@gmail.com>

applications/irda/irda-app-signal.h

@@ -0,0 +1,61 @@
+#pragma once
+#include <irda_worker.h>
+#include <stdint.h>
+#include <string>
+#include <irda.h>
+
+class IrdaAppSignal {
+public:
+    typedef struct {
+        size_t timings_cnt;
+        uint32_t* timings;
+    } RawSignal;
+
+private:
+    bool decoded;
+    union {
+        IrdaMessage message;
+        RawSignal raw;
+    } payload;
+
+    void copy_timings(const uint32_t* timings, size_t size);
+    void clear_timings();
+
+public:
+    IrdaAppSignal() {
+        decoded = true;
+        payload.message.protocol = IrdaProtocolUnknown;
+    }
+
+    ~IrdaAppSignal() {
+        clear_timings();
+    }
+
+    IrdaAppSignal(const uint32_t* timings, size_t timings_cnt);
+    IrdaAppSignal(const IrdaMessage* irda_message);
+
+    IrdaAppSignal(const IrdaAppSignal& other);
+    IrdaAppSignal(IrdaAppSignal&& other);
+
+    IrdaAppSignal& operator=(const IrdaAppSignal& signal);
+
+    void set_message(const IrdaMessage* irda_message);
+    void set_raw_signal(uint32_t* timings, size_t timings_cnt);
+    void copy_raw_signal(uint32_t* timings, size_t timings_cnt);
+
+    void transmit() const;
+
+    bool is_raw(void) const {
+        return !decoded;
+    }
+
+    const IrdaMessage& get_message(void) const {
+        furi_assert(decoded);
+        return payload.message;
+    }
+
+    const RawSignal& get_raw_signal(void) const {
+        furi_assert(!decoded);
+        return payload.raw;
+    }
+};