Search field in Network list

Description:
Please add a search field in the list of networks

Purpose:
I do a lot of testing on various platforms and dapps on various networks. There are more than 30 networks added to my MetaMask, and every time I have to scroll through the list of blockchains for quite a long time. The search field will solve the problem of searching and speed up switching between networks.

Extension/Mobile/Both:
Extension