[Feature Request]: Allow only one window instance to play instance

### Guidelines

- [X] I have searched the issue tracker for [open](https://github.com/FreeTubeApp/FreeTube/issues?q=is%3Aopen+is%3Aissue) and [closed](https://github.com/FreeTubeApp/FreeTube/issues?q=is%3Aissue+is%3Aclosed) issues that are similar to the feature request I want to file, without success.
- [X] I have searched the [documentation](https://docs.freetubeapp.io/) for information that matches the description of the feature request I want to file, without success.
- [X] This issue contains only one feature request.

### Problem Description

When having multiple windows (/ tabs https://github.com/FreeTubeApp/FreeTube/issues/333), it probably makes sense if only one played at _most_ times

### Proposed Solution

Same feature as https://www.mrfdev.com/enhancer-for-youtube


### Alternatives Considered

:upside_down_face:

### Issue Labels

ease of use improvement

### Additional Information

https://github.com/FreeTubeApp/FreeTube/issues?q=is%3Aissue+allow+only+one+instance+to+play