[ISSUE-137] Add search for package version support

[dykderrick]

Hi David, I was using this app for a while and found it very good to maintain my local formulae/casks of Homebrew. While the listing function is great, the app would be more enhanced if we could add version specificity when users are searching for packages.

I found you already issued a feature request at here, so in this PR I am adding this function.

The flow is simple, but some discussions can be made regarding which search method would be best for user experience. In the issue you mentioned two ways of specifying a package version, but what we can do as well is using grep like below:

brew formulae | grep@postgresql@14

The search goes to local database, so the result could be faster rendered and more accurate.

Being said, I think brew search is also appreciated because it has more tolerance to accepting user's prompt. What do you think? Looking forward to your reply.

[buresdv]

This is interesting, I'll come back to it when I have more time… I've been really busy.