feat: Refactor data migration functionality and introduce cloud migration dialog

- Removed the DataMigration.vue component and integrated its functionality into KvDatabaseCard.vue.
- Added a new CloudMigrationDialog.vue component for handling cloud data migration.
- Updated KvDatabaseCard.vue to include a button for initiating local migration and to manage the visibility of the new CloudMigrationDialog.
- Cleaned up the DataProviderSettingsCard.vue by removing old data migration UI elements.
- Enhanced user experience by providing a more streamlined migration process with clear category selection and progress indication.

index.html

@@ -79,6 +79,6 @@
     </div>
     <div id="app"></div>
     <script type="module" src="/src/main.js"></script>
-    <a href="https://beian.miit.gov.cn/" target="_blank" rel="noopener" style="display: none;">浙ICP备2024068645号-4</a>
+    <a href="https://beian.miit.gov.cn/" target="_blank" rel="noopener" style="display: none;">xICP备x号-4</a>
   </body>
 </html>