feat(mobile): add support for material themes (#11560)

* feat(mobile): add support for material themes

Added support for custom theming and updated all elements accordingly.

* fix(mobile): Restored immich brand colors to default theme

* fix(mobile): make ListTile titles bold in settings main page

* feat(mobile): update bottom nav and appbar colors

* small tweaks

---------

Co-authored-by: Alex <alex.tran1502@gmail.com>

mobile/pubspec.lock

@@ -377,6 +377,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "7.0.0"
+  dynamic_color:
+    dependency: "direct main"
+    description:
+      name: dynamic_color
+      sha256: eae98052fa6e2826bdac3dd2e921c6ce2903be15c6b7f8b6d8a5d49b5086298d
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.7.0"
   easy_image_viewer:
     dependency: "direct main"
     description: