[FL-3401, FL-3402] SubGhz: add "SubGhz test" external application and the ability to work "SubGhz" as an external application (#2851)

* [FL-3401] SubGhz:  add "SubGhz test" external application
* SubGhz: delete test test functionality from SubGhz app
* [FL-3402] SubGhz: move func protocol creation API

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

applications/debug/subghz_test/helpers/subghz_test_event.h

@@ -0,0 +1,7 @@
+#pragma once
+
+typedef enum {
+    //SubGhzTestCustomEvent
+    SubGhzTestCustomEventStartId = 100,
+    SubGhzTestCustomEventSceneShowOnlyRX,
+} SubGhzTestCustomEvent;

applications/debug/subghz_test/helpers/subghz_test_frequency.c

@@ -0,0 +1,38 @@
+#include "subghz_test_frequency.h"
+
+const uint32_t subghz_frequencies_testing[] = {
+    /* 300 - 348 */
+    300000000,
+    304500000,
+    310000000,
+    312025000,
+    313250000,
+    313625000,
+    315000000,
+    315225000,
+    321950000,
+    348000000,
+    /* 387 - 464 */
+    387000000,
+    433075000, /* LPD433 first */
+    433825000,
+    433920000, /* LPD433 mid */
+    434420000,
+    434775000, /* LPD433 last channels */
+    438900000,
+    464000000,
+    /* 779 - 928 */
+    779000000,
+    868150000,
+    868350000,
+    868550000,
+    915000000,
+    925000000,
+    926500000,
+    927950000,
+    928000000,
+};
+
+const uint32_t subghz_frequencies_count_testing =
+    sizeof(subghz_frequencies_testing) / sizeof(uint32_t);
+const uint32_t subghz_frequencies_433_92_testing = 13;

applications/debug/subghz_test/helpers/subghz_test_frequency.h

@@ -0,0 +1,6 @@
+#pragma once
+#include "../subghz_test_app_i.h"
+
+extern const uint32_t subghz_frequencies_testing[];
+extern const uint32_t subghz_frequencies_count_testing;
+extern const uint32_t subghz_frequencies_433_92_testing;

applications/debug/subghz_test/helpers/subghz_test_types.h

@@ -0,0 +1,18 @@
+#pragma once
+
+#include <furi.h>
+#include <furi_hal.h>
+
+#define SUBGHZ_TEST_VERSION_APP "0.1"
+#define SUBGHZ_TEST_DEVELOPED "SkorP"
+#define SUBGHZ_TEST_GITHUB "https://github.com/flipperdevices/flipperzero-firmware"
+
+typedef enum {
+    SubGhzTestViewVariableItemList,
+    SubGhzTestViewSubmenu,
+    SubGhzTestViewStatic,
+    SubGhzTestViewCarrier,
+    SubGhzTestViewPacket,
+    SubGhzTestViewWidget,
+    SubGhzTestViewPopup,
+} SubGhzTestView;