feat: add quotations from marked text, with citations and sharing

app/lib/presentation/app.dart

@@ -36,6 +36,7 @@ class AppDependencies {
     Strings? strings,
     KeyStore? keys,
     Future<PickedPem?> Function(String title)? pickPemFile,
+    Future<void> Function(String text)? share,
   })  : db = database ?? MewsDatabase(),
         fetch = fetch ?? Actor.create(FetchHandler.new),
         strings = strings ?? Strings() {
@@ -61,6 +62,7 @@ class AppDependencies {
       keys: this.keys,
       strings: this.strings,
       pickPemFile: pickPemFile,
+      share: share,
     );
     browser = BrowserController(
       db: db,