Accept &QuerierWrapper not &Querier in helpers

[ethanfrey]

This has come up a few times and it seems to not be so usable currently. Most code has Deps or DepsMut, which contains &QuerierWrapper. However, the helpers want a Querier only to later cast it to a QuerierWrapper.

That plus the generic Q: Querier condition makes it very hard to use. Let's make these easier to use. (All of them, not just the cw721 in the example)

[ivanfong01]

I dun think this is closed? As the commit was rejected. Cw20 helper iss still using &Querier

[ethanfrey]

Yes, this is still an error. What happened to the above patch?
Let's get this fixed finally

[uint]

That patch isn't in git history on main. It feels like history was rewritten at some point? Odd. Regardless, I'll bring it back.

[uint]

Done in #839