[Feature Request]: Tag autocomplete when adding tags

[Tyrannicodin]

Checklist

• I am using an up-to-date version.
• I have read the documentation.
• I have searched existing issues.

Description

This would add a menu that tries to autocomplete the tag the user is trying to add via a text box, similar to hydrus web:

This also includes an add button if users would prefer to add via a context menu/modal.

Solution

No response

Alternatives

No response

[python357-1]

@Tyrannicodin do you mind if i take a crack at this?

[Tyrannicodin]

Not at all, I've been pretty busy lately and have been putting most of my time into other projects so I'd really appreciate it.

[ToxicMushroom]

I don't see what benefit this has over the current popup ?

[CyanVoxel]

This feature was requested before #655 streamlined the process for adding tags, so yeah there should no longer be a need for this feature given that the current process for adding tags provides the same information with the same number of key/mouse presses.