[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>

site_scons/site_tools/fbt_assets.py

@@ -13,11 +13,11 @@ def icons_emitter(target, source, env):
         "compiled/assets_icons.c",
         "compiled/assets_icons.h",
     ]
+    source = env.GlobRecursive("*.*", env["ICON_SRC_DIR"])
     return target, source
 
 
 def proto_emitter(target, source, env):
-    out_path = target[0].path
     target = []
     for src in source:
         basename = os.path.splitext(src.name)[0]
@@ -109,7 +109,7 @@ def generate(env):
         BUILDERS={
             "IconBuilder": Builder(
                 action=Action(
-                    '${PYTHON3} "${ASSETS_COMPILER}" icons ${SOURCE.posix} ${TARGET.dir.posix}',
+                    '${PYTHON3} "${ASSETS_COMPILER}" icons ${ICON_SRC_DIR} ${TARGET.dir}',
                     "${ICONSCOMSTR}",
                 ),
                 emitter=icons_emitter,