Refactor: Remove Supabase authentication and related code

- Removed Supabase authentication logic from xem/[slug].vue and yeu-thich.vue.
- Updated favorite and watch later messages to be device-specific.
- Removed unused user state and authentication initialization.
- Deleted supabase.ts plugin file and related configurations.
- Updated nuxt.config.ts to remove Supabase runtime configuration.
- Removed Supabase dependencies from package.json and package-lock.json.
- Adjusted Dockerfile for development environment.
- Added admin layout and pages for managing settings, movies, and users.
- Implemented admin dashboard with statistics and recent activities.
- Created movie and user management interfaces with search functionality.

nuxt.config.ts

@@ -25,12 +25,6 @@ export default defineNuxtConfig({
       ],
     },
   },
-  runtimeConfig: {
-    public: {
-      supabaseUrl: process.env.SUPABASE_URL,
-      supabaseKey: process.env.SUPABASE_KEY,
-    },
-  },
   devServer: {
     host: '0.0.0.0',
     port: 3002,