Mark Project as No Longer Maintained and Implement In-App Shutdown Notice

[ILIYANGERMANOV]

Pull request (PR) checklist

Please check if your pull request fulfills the following requirements:

• I've read the Contribution Guidelines and my PR doesn't break the rules.
• I've read and understand the Developer Guidelines.
• I confirm that I've run the code locally and everything works as expected.
• My PR includes only the necessary changes to fix the issue (i.e., no unnecessary files or lines of code are changed).
• 🎬 I've attached a screen recording of using the new code to the next paragraph (if applicable).

Screen recording of your changes (if applicable):

What's changed?

Describe with a few bullets what's new:

• I've fixed...

Before	After
{media}	{media}
{media}	{media}

Risk factors

What may go wrong if we merge your PR?

• ...
• ...

In what cases won't your code work?

• ...
• ...

Does this PR close any GitHub issues? (do not delete)

• Closes n/a

Troubleshooting GitHub Actions (CI) failures ❌

Pull request checks failing? Read our CI Troubleshooting guide.