Streamline claims process

[jplatts12]

I've heard feedback from DOT holders from funds and validators that the claims process has taken 1-2 hours or more.

This could be for several reasons we can't control, but some we definitely can control. The guides for the claims process for using different apps are all mixed together.

I suggest we change the top of https://guide.kusama.network/en/latest/start/claims/ to "Using PolkadotUI?" "Using X?" and linking to guides specifically for those methods. Right now Step 1 and Step 2 are broken apart because multiple guides are in the same guide.