feature requst: add name of active Firefox "container" to tab title

[JeanMertz]

I asked this on Reddit before, and someone suggested I'd post it as a feature request for ReTitle:

I would love to be able to add the name of the container the current tab is opened in to the name of the tab. This allows me to use automation to detect which container is active in my browser.

If you're open to such a feature (I suppose it would be FF only, as I don't think Chrome has any support for this), I can take a stab at it sometime soon.

[Lazyuki]

That's an interesting feature. I'd have to dig around FF's container APIs to see if it's doable. If you want, you can create a PR against the rewrite branch.