useWalletMultiButton should maybe be in @solana/wallet-adapter-react

[21e8]

Describe the bug
I was trying to find out how to make a custom wallet connector using this link

After having to search this repo for the name of the hook useWalletMultiButton I was wondering whats the purpose of @solana/wallet-adapter-base-ui
It is:

• a repo that exports only react hooks
• a repo whose name suggests that it more general than react
• something I would expect in @solana/wallet-adapter-react

So I wanted to maybe open the conversation about merging this repo into @solana/wallet-adapter-react