[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/parsers/nfc_supported_card.h

@@ -4,6 +4,10 @@
 #include "../nfc_worker.h"
 #include "../nfc_device.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 typedef enum {
     NfcSupportedCardTypePlantain,
     NfcSupportedCardTypeTroika,
@@ -37,3 +41,7 @@ bool nfc_supported_card_verify_and_parse(NfcDeviceData* dev_data);
 // support the card. This is needed for DESFire card parsers which can't
 // provide keys, and only use NfcSupportedCard->parse.
 bool stub_parser_verify_read(NfcWorker* nfc_worker, FuriHalNfcTxRxContext* tx_rx);
+
+#ifdef __cplusplus
+}
+#endif