feature(updater): Implement auto-updating system using AppCast protocol

macos/Podfile.lock

@@ -1,4 +1,7 @@
 PODS:
+  - auto_updater_macos (0.0.1):
+    - FlutterMacOS
+    - Sparkle
   - file_picker (0.0.1):
     - FlutterMacOS
   - flutter_secure_storage_darwin (10.0.0):
@@ -10,10 +13,12 @@ PODS:
   - shared_preferences_foundation (0.0.1):
     - Flutter
     - FlutterMacOS
+  - Sparkle (2.9.3)
   - window_manager (0.5.0):
     - FlutterMacOS
 
 DEPENDENCIES:
+  - auto_updater_macos (from `Flutter/ephemeral/.symlinks/plugins/auto_updater_macos/macos`)
   - file_picker (from `Flutter/ephemeral/.symlinks/plugins/file_picker/macos`)
   - flutter_secure_storage_darwin (from `Flutter/ephemeral/.symlinks/plugins/flutter_secure_storage_darwin/darwin`)
   - FlutterMacOS (from `Flutter/ephemeral`)
@@ -21,7 +26,13 @@ DEPENDENCIES:
   - shared_preferences_foundation (from `Flutter/ephemeral/.symlinks/plugins/shared_preferences_foundation/darwin`)
   - window_manager (from `Flutter/ephemeral/.symlinks/plugins/window_manager/macos`)
 
+SPEC REPOS:
+  trunk:
+    - Sparkle
+
 EXTERNAL SOURCES:
+  auto_updater_macos:
+    :path: Flutter/ephemeral/.symlinks/plugins/auto_updater_macos/macos
   file_picker:
     :path: Flutter/ephemeral/.symlinks/plugins/file_picker/macos
   flutter_secure_storage_darwin:
@@ -36,11 +47,13 @@ EXTERNAL SOURCES:
     :path: Flutter/ephemeral/.symlinks/plugins/window_manager/macos
 
 SPEC CHECKSUMS:
+  auto_updater_macos: 3a42f1a06be6981f1a18be37e6e7bf86aa732118
   file_picker: 7584aae6fa07a041af2b36a2655122d42f578c1a
   flutter_secure_storage_darwin: acdb3f316ed05a3e68f856e0353b133eec373a23
   FlutterMacOS: d0db08ddef1a9af05a5ec4b724367152bb0500b1
   screen_retriever_macos: c5508cc3c66ff0d4db650480cf0ab691e220d933
   shared_preferences_foundation: 7036424c3d8ec98dfe75ff1667cb0cd531ec82bb
+  Sparkle: 39dbdf28637f6056fbf5ee6494bdbfae54f49f41
   window_manager: b729e31d38fb04905235df9ea896128991cad99e
 
 PODFILE CHECKSUM: 54d867c82ac51cbd61b565781b9fada492027009