feat: ability to change library (#77)

* feat: add AbsIcons font and update pubspec.yaml for font integration

* feat: implement library selection in YouPage

* fix: optimize authenticatedApi provider to not rebuild unnecessarily

* feat: add LibrarySwitchChip widget and integrate it into YouPage and ScaffoldWithNavBar

* feat: enhance library selection UI with refresh functionality and error handling

* fix: change library switcher activation from long press to double tap

* feat: show current library on nav bar

* feat: refactor LibraryBrowserPage to use CustomScrollView and enhance app bar with dynamic library icon and title

lib/shared/widgets/vaani_logo.dart

@@ -0,0 +1,27 @@
+import 'package:flutter/material.dart';
+
+class VaaniLogo extends StatelessWidget {
+  const VaaniLogo({
+    super.key,
+    this.size,
+    this.duration = const Duration(milliseconds: 750),
+    this.curve = Curves.fastOutSlowIn,
+  });
+
+  final double? size;
+  final Duration duration;
+  final Curve curve;
+
+  @override
+  Widget build(BuildContext context) {
+    final IconThemeData iconTheme = IconTheme.of(context);
+    final double? iconSize = size ?? iconTheme.size;
+    return AnimatedContainer(
+      width: iconSize,
+      height: iconSize,
+      duration: duration,
+      curve: curve,
+      child: Image.asset('assets/images/vaani_logo_foreground.png'),
+    );
+  }
+}