Create a way to search for a subject from anywhere.

For example, hold F1 to bring up a search box with a dropdown of matches. Click one of the matches to pop up the normal lookup UI:

        ┌────────────┐
Search: │ A          │
        └────────────┘─┐
          │ Abigail    │
          │ Apple      │
          │ Apple Tree │
          │ Apricot    │
          │ ...        │
          └────────────┘

Mentioned in the forums.

I've been taking a stab at this with @Pathoschild's help, so far I'm working on building a search index and started working on the UI:

Reopened. This was incorrectly closed by GitHub when I merged my mod repositories together.

I'm looking into this for an upcoming release. I updated the code from PR #9, and it still works fine after a few tweaks:

A lot has changed since the original code was written in 2016; the new SubjectFactory should make this much easier to finish.

Added in the upcoming Lookup Anything 1.26.