I’ll go along with Fizze and recommend MP3Tag for this one.
I use it for all my tagging when converting LP’s, but not quite in the way that you describe, even thought I think it can be used that way.
The software I use for cleaning up the .wav’s splits the tracks according to cue points and names the files side101.wav, side102.wav, etc. Then after encoding these to flac, I just open these up with MP3Tag and enter the tag info for all the tracks. Then MP3Tag will rename the files for me according to the tag info.
For me, this is really easier typing the info in a text file and trying to import to the tags, IMHO.