Material IOR dorpdown list

As PBR workflows are basically standard by now I try to create all my shaders as physically accurat as possible.

One major annoyance though is having to always google for correct IOR values and I admit I often just skip this step entirely for this very reason.

I thought it might be really handy and also easy to implement a little IOR library which can be accessed via a little dropdown menue (with search function) for shading nodes that expose the IOR vallue to the user.

I should add that I am a rather new Blender user and maybe something like that already exists and I don't know about it. Please let me know if that's the case.

Thanks for this great piece of software and freedom and big thank you to everyone involved in it's ceation!