feat: added permission request screen

[rohansen856]

Description

Please include a summary of the change and which issue is fixed. List any dependencies that are required for this change.

Fixes #412

• Edited total of 4 files and added 3 files
• added new permissions page under lib/app/models folder using get-cli and edited accordingly
• edited files under routes folder to add the permission screen path
• modifies the main.dart file so that permissions are not requested at the app start.

• For Linux, Mac and Windows the screen is skipped using:

    if (Platform.isLinux || Platform.isMacOS || Platform.isWindows) {
      WidgetsBinding.instance.addPostFrameCallback((_) {
        Get.offAllNamed('/home');
      });
      return const SizedBox.shrink();
    }

Replace issue_no with the issue number which is fixed in this PR

Screenshots

Example in linux device:

Screencast.from.2025-01-13.00-07-04.webm

Example in android device:

WhatsApp.Video.2025-01-13.at.12.11.07.AM.mp4

Final UI:

Checklist

• Tests have been added or updated to cover the changes
• Documentation has been updated to reflect the changes
• Code follows the established coding style guidelines
• All tests are passing

[rohansen856]

*Also updated a test to match the current changes

[rohansen856]

@BrawlerXull i have resolved all the test and analyze errors. the 2 tests failing are related to another issue i mentioned here.
This PR is ready for review.
Thanks.

[BrawlerXull]

I've reviews some changes

[rohansen856]

@BrawlerXull I have updated according to all the requirements:

• Used PermissionManager from lib/app/utils/permissions/permissions_manager.dart instead of custom logic in PermissionController.
• Made the _buildPermissionSection in permission_view into a separate StatelessWidget

Please let me know if any more refactors needed.

[Pavel401]

Thanks @rohansen856