[FL-2627] Flipper applications: SDK, build and debug system (#1387)

* Added support for running applications from SD card (FAPs - Flipper Application Packages)
* Added plugin_dist target for fbt to build FAPs
* All apps of type FlipperAppType.EXTERNAL and FlipperAppType.PLUGIN are built as FAPs by default
* Updated VSCode configuration for new fbt features - re-deploy stock configuration to use them
* Added debugging support for FAPs with fbt debug & VSCode
* Added public firmware API with automated versioning

Co-authored-by: hedger <hedger@users.noreply.github.com>
Co-authored-by: SG <who.just.the.doctor@gmail.com>
Co-authored-by: あく <alleteam@gmail.com>

applications/main/infrared/infrared_custom_event.h

@@ -0,0 +1,57 @@
+#pragma once
+
+#include <stdint.h>
+#include <stddef.h>
+
+enum InfraredCustomEventType {
+    // Reserve first 100 events for button types and indexes, starting from 0
+    InfraredCustomEventTypeReserved = 100,
+    InfraredCustomEventTypeMenuSelected,
+    InfraredCustomEventTypeTransmitStarted,
+    InfraredCustomEventTypeTransmitStopped,
+    InfraredCustomEventTypeSignalReceived,
+    InfraredCustomEventTypeTextEditDone,
+    InfraredCustomEventTypePopupClosed,
+    InfraredCustomEventTypeButtonSelected,
+    InfraredCustomEventTypeBackPressed,
+
+    InfraredCustomEventTypeRpcLoad,
+    InfraredCustomEventTypeRpcExit,
+    InfraredCustomEventTypeRpcButtonPress,
+    InfraredCustomEventTypeRpcButtonRelease,
+    InfraredCustomEventTypeRpcSessionClose,
+};
+
+#pragma pack(push, 1)
+typedef union {
+    uint32_t packed_value;
+    struct {
+        uint16_t type;
+        int16_t value;
+    } content;
+} InfraredCustomEvent;
+#pragma pack(pop)
+
+static inline uint32_t infrared_custom_event_pack(uint16_t type, int16_t value) {
+    InfraredCustomEvent event = {.content = {.type = type, .value = value}};
+    return event.packed_value;
+}
+
+static inline void
+    infrared_custom_event_unpack(uint32_t packed_value, uint16_t* type, int16_t* value) {
+    InfraredCustomEvent event = {.packed_value = packed_value};
+    if(type) *type = event.content.type;
+    if(value) *value = event.content.value;
+}
+
+static inline uint16_t infrared_custom_event_get_type(uint32_t packed_value) {
+    uint16_t type;
+    infrared_custom_event_unpack(packed_value, &type, NULL);
+    return type;
+}
+
+static inline int16_t infrared_custom_event_get_value(uint32_t packed_value) {
+    int16_t value;
+    infrared_custom_event_unpack(packed_value, NULL, &value);
+    return value;
+}