feat(mobile): allow customizing the quick-access symbol bar

[TEE0207]

Checklist:

• I have read and followed the contribution guidelines.
• I have read and followed the how to open a pull request guide.
• My pull request targets the main branch of the repo.
• I have tested these changes locally on my machine.

Closes #1661

[TEE0207]

Hi, just wanted to give an update on the CI checks:

The Analyze code step now passes successfully. The remaining failure is on the Install applesimutils step, which is a Codemagic infrastructure issue unrelated to this PR's changes — it fails before even reaching the simulator or app build steps. I checked and this appears to be a flaky CI environment issue on the macOS build machine.

All code changes are clean with zero errors and zero new warnings introduced. The PR is ready for review when you get a chance. Happy to make any changes based on your feedback!

[Nirajn2311]

Hi @TEE0207 , could you please rebase your PR against main branch as your code is a bit out of date. Also the codebase doesn't support flutter 3.44 due to a couple of issues with some packages so you would have to downgrade your flutter version to 3.41