[Feature Request] Add ability to filter available frames by file name

[AFigureOfBlue]

I have a large number of custom frames which I use with Tokenizer, and it can be inconvenient scrolling through the list trying to visually pinpoint the correct one when I'm adding a frame to a token. But often times, I know the file name fairly readily (or can name the frames in a way that would make it easy to search for them). Being able to filter the displayed frames by file name may be a nice addition to the module which, at least for my use case, would make it significantly faster to select the frame I want to use.