[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>

scripts/fbt/appmanifest.py

@@ -18,6 +18,7 @@ class FlipperAppType(Enum):
     SETTINGS = "Settings"
     STARTUP = "StartupHook"
     EXTERNAL = "External"
+    MENUEXTERNAL = "MenuExternal"
     METAPACKAGE = "Package"
     PLUGIN = "Plugin"
 
@@ -213,7 +214,7 @@ class AppBuildset:
         appmgr: AppManager,
         appnames: List[str],
         hw_target: str,
-        message_writer: Callable = None,
+        message_writer: Callable | None = None,
     ):
         self.appmgr = appmgr
         self.appnames = set(appnames)
@@ -367,6 +368,11 @@ class ApplicationsCGenerator:
         ),
     }
 
+    APP_EXTERNAL_TYPE = (
+        "FlipperExternalApplication",
+        "FLIPPER_EXTERNAL_APPS",
+    )
+
     def __init__(self, buildset: AppBuildset, autorun_app: str = ""):
         self.buildset = buildset
         self.autorun = autorun_app
@@ -387,6 +393,17 @@ class ApplicationsCGenerator:
      .icon = {f"&{app.icon}" if app.icon else "NULL"},
      .flags = {'|'.join(f"FlipperInternalApplicationFlag{flag}" for flag in app.flags)} }}"""
 
+    def get_external_app_descr(self, app: FlipperApplication):
+        app_path = "/ext/apps"
+        if app.fap_category:
+            app_path += f"/{app.fap_category}"
+        app_path += f"/{app.appid}.fap"
+        return f"""
+    {{
+     .name = "{app.name}",
+     .icon = {f"&{app.icon}" if app.icon else "NULL"},
+     .path = "{app_path}" }}"""
+
     def generate(self):
         contents = [
             '#include "applications.h"',
@@ -418,4 +435,11 @@ class ApplicationsCGenerator:
                 ]
             )
 
+        entry_type, entry_block = self.APP_EXTERNAL_TYPE
+        external_apps = self.buildset.get_apps_of_type(FlipperAppType.MENUEXTERNAL)
+        contents.append(f"const {entry_type} {entry_block}[] = {{")
+        contents.append(",\n".join(map(self.get_external_app_descr, external_apps)))
+        contents.append("};")
+        contents.append(f"const size_t {entry_block}_COUNT = COUNT_OF({entry_block});")
+
         return "\n".join(contents)

scripts/fbt_tools/fbt_extapps.py

@@ -423,7 +423,10 @@ def AddAppLaunchTarget(env, appname, launch_target_name):
         host_app = env["APPMGR"].get(artifacts_app_to_run.app.requires[0])
 
         if host_app:
-            if host_app.apptype == FlipperAppType.EXTERNAL:
+            if host_app.apptype in [
+                FlipperAppType.EXTERNAL,
+                FlipperAppType.MENUEXTERNAL,
+            ]:
                 _add_host_app_to_targets(host_app)
             else:
                 # host app is a built-in app

scripts/ufbt/SConstruct

@@ -262,6 +262,7 @@ apps_artifacts = appenv["EXT_APPS"]
 apps_to_build_as_faps = [
     FlipperAppType.PLUGIN,
     FlipperAppType.EXTERNAL,
+    FlipperAppType.MENUEXTERNAL,
 ]
 
 known_extapps = [