Make cw721-base queries public

[shanev]

This is so contracts that extend cw721-base can call these queries directly, especially useful in unit tests.

[CLAassistant]

All committers have signed the CLA.

[orkunkl]

@shanev Thanks! can you rebase/fix conflicting files? then we can merge

[maurolacy]

@shanev Thanks! can you rebase/fix conflicting files? then we can merge

Hmm, not sure if he would be able to do that properly, because we screwed main. Better thing would be to close this, and do it again against a rebased main.

Or, we do it ourselves, as these are simple / small changes. @orkunkl , can you take it?

Update: Already did it. See #399.

[maurolacy]

Replaced by #399.