[FL-3400] External menu apps (#2849)

* FBT, applications: add MENUEXTERNAL app type
* FBT, uFBT: build MENUEXTERNAL as EXTERNAL app
* Loader menu: show external menu apps
* LFRFID: move to sd card
* FBT: always build External Applications list
* Archive: look for external apps path
* Infrared: move to sd card
* Apps: add "start" apps
* iButton: move to sd card
* BadUSB: move to sd card
* External apps: update icons
* GPIO: move to sd card
* Loader: look for external apps path
* U2F: move to sd
* SubGHz: move to sd
* Apps: "on_start" metapackage
* NFC: move to sd
* Sync f7 and f18

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

lib/nfc/SConscript

@@ -6,6 +6,11 @@ env.Append(
     ],
     SDK_HEADERS=[
         File("nfc_device.h"),
+        File("nfc_worker.h"),
+        File("nfc_types.h"),
+        File("helpers/mfkey32.h"),
+        File("parsers/nfc_supported_card.h"),
+        File("helpers/nfc_generators.h"),
         File("protocols/nfc_util.h"),
     ],
 )