[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>

lib/file_reader/file_reader.h

@@ -0,0 +1,44 @@
+#pragma once
+#include <string>
+#include <memory>
+#include "sd-card-api.h"
+#include "filesystem-api.h"
+
+class FileReader {
+private:
+    char file_buf[48];
+    size_t file_buf_cnt = 0;
+    size_t max_line_length = 0;
+    SdCard_Api* sd_ex_api;
+    FS_Api* fs_api;
+
+public:
+    FileReader() {
+        sd_ex_api = static_cast<SdCard_Api*>(furi_record_open("sdcard-ex"));
+        fs_api = static_cast<FS_Api*>(furi_record_open("sdcard"));
+        reset();
+    }
+    ~FileReader() {
+        furi_record_close("sdcard");
+        furi_record_close("sdcard-ex");
+    }
+
+    std::string getline(File* file);
+
+    void reset(void) {
+        file_buf_cnt = 0;
+    }
+
+    SdCard_Api& get_sd_api() {
+        return *sd_ex_api;
+    }
+
+    FS_Api& get_fs_api() {
+        return *fs_api;
+    }
+
+    void set_max_line_length(size_t value) {
+        max_line_length = value;
+    }
+};
+