about: added android dependencies to OSS

lib/utils/constants.dart

@@ -28,7 +28,28 @@ class Constants {
   static const svgBackground = Colors.white;
   static const svgColorFilter = ColorFilter.mode(svgBackground, BlendMode.dstOver);
 
-  static const List<Dependency> packages = [
+  static const List<Dependency> androidDependencies = [
+    Dependency(
+      name: 'Glide',
+      license: 'Apache 2.0, BSD 2-Clause',
+      licenseUrl: 'https://github.com/bumptech/glide/blob/master/LICENSE',
+      sourceUrl: 'https://github.com/bumptech/glide',
+    ),
+    Dependency(
+      name: 'Guava',
+      license: 'Apache 2.0',
+      licenseUrl: 'https://github.com/google/guava/blob/master/COPYING',
+      sourceUrl: 'https://github.com/google/guava',
+    ),
+    Dependency(
+      name: 'Metadata Extractor',
+      license: 'Apache 2.0',
+      licenseUrl: 'https://github.com/drewnoakes/metadata-extractor/blob/master/LICENSE',
+      sourceUrl: 'https://github.com/drewnoakes/metadata-extractor',
+    ),
+  ];
+
+  static const List<Dependency> flutterPackages = [
     Dependency(
       name: 'Flutter',
       license: 'BSD 3-Clause',

lib/widgets/about/licenses.dart

@@ -17,7 +17,7 @@ class _LicensesState extends State<Licenses> {
   @override
   void initState() {
     super.initState();
-    _packages = List.of(Constants.packages);
+    _packages = [...Constants.androidDependencies, ...Constants.flutterPackages];
     _sortPackages();
   }