feat: release/ dizininde hazır binary + install.sh fallback

release/data/flutter_assets/FontManifest.json

@@ -0,0 +1 @@
+[{"family":"MaterialIcons","fonts":[{"asset":"fonts/MaterialIcons-Regular.otf"}]}]

release/data/flutter_assets/NativeAssetsManifest.json

@@ -0,0 +1 @@
+{"format-version":[1,0,0],"native-assets":{}}

release/data/flutter_assets/version.json

@@ -0,0 +1 @@
+{"app_name":"imajviewer","version":"1.0.0","build_number":"1","package_name":"imajviewer"}