chore(pkg)!: move wrapper package from core -> app

[evan-forbes]

similar to #706 and #702, we can move this package to the app since we're deleting all of the uses in core.

[codecov-commenter]

Codecov Report

Merging #707 (61c81b7) into main (bf4fb49) will increase coverage by 0.38%.
The diff coverage is 86.20%.

@@            Coverage Diff             @@
##             main     #707      +/-   ##
==========================================
+ Coverage   44.12%   44.51%   +0.38%     
==========================================
  Files          31       32       +1     
  Lines        3159     3188      +29     
==========================================
+ Hits         1394     1419      +25     
- Misses       1663     1666       +3     
- Partials      102      103       +1     

Impacted Files	Coverage Δ
pkg/inclusion/nmt_caching.go	80.00% <ø> (ø)
pkg/prove/proof.go	83.82% <ø> (ø)
x/payment/types/payfordata.go	78.78% <ø> (ø)
pkg/wrapper/nmt_wrapper.go	86.20% <86.20%> (ø)

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