add search bars to resource packs, behaviour packs, and worlds

Hello Mojang,

I’m writing to express my gratitude for the development of this beautiful game. I play it frequently.

I have a suggestion for an improvement: it would be helpful if you could add search bars to resource packs, behaviour packs, and worlds. This would make it easier to find the desired world (or other content) if you have many of them.

Thank you very much,

Neojulian1090