Telegram Desktop Accessibility

Telegram is widely adopted by visually impaired users for its chat capabilities; however, the desktop version lacks accessibility features. Unfortunately, the developers seem less inclined to address this issue, as the number of affected users is relatively low compared to other reported bugs.

Issue: https://github.com/telegramdesktop/tdesktop/issues/476#issuecomment-450670711

To-Do:
A pull request for the Telegram desktop addressing the following issues:
1. Ensure that the screen reader announces all focused elements accurately.
2. Ensure consistent behavior for keys such as Tab, Shift-Tab, and Arrow keys.
3. Implement keyboard shortcuts for navigating between messages, pinning messages, playing and pausing voice messages, and other essential functions.