Track casks installed via custom taps

[eugenesvk]

As far as I understand, casks isntalled via custom taps aren't tracked and not shown in the installed/uninstall lists

[milanvarady]

I'm working on this feature for the next update. There are different ways I could implement this.

1. Load casks from taps into the main model, alongside regular casks. Which would include it in the search and installed section as any other cask.
2. Load casks from taps separately and display them in a dedicated tab. This way they would be separated from the rest of the casks and wouldn't appear in the search.

Which one would you prefer @eugenesvk?

[eugenesvk]

Search is good, so I think option 1