Made a lot of progress on this tool today. I almost have all the pieces in place. I made sure that the frame selection from earlier was able to work inside of the editor. Tomorrow I should have everything working with the ability then draw the hitboxes implemented into the main scene.
I also updated my animation list to display animations recently created by the frame selection node and/or loaded by the main scene itself. All of these will go into a sort of undefined unsaved animation array to later be used for creating an animation library. This tool is also able to load in an animation library and utilize premade animations to add hitboxes to them if necessary.
I'm hoping to finish this up soon if not tomorrow. As it stands, I already have a tool that I can use to easily make multiple animations with very quickly and easily