chore: Use prefix-based routing for IBCv2 contracts

[kulikthebird]

closes #2278

[codecov]

Codecov Report

Attention: Patch coverage is 76.92308% with 3 lines in your changes missing coverage. Please review.

Project coverage is 44.95%. Comparing base (008e4f5) to head (baaa260).
Report is 11 commits behind head on main.

Files with missing lines	Patch %	Lines
tests/wasmibctesting/utils.go	0.00%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2258      +/-   ##
==========================================
+ Coverage   44.92%   44.95%   +0.03%     
==========================================
  Files          80       80              
  Lines       11034    11010      -24     
==========================================
- Hits         4957     4950       -7     
+ Misses       5641     5623      -18     
- Partials      436      437       +1     

Files with missing lines	Coverage Δ
app/app.go	86.59% <100.00%> (ø)
x/wasm/keeper/ibc.go	100.00% <100.00%> (ø)
x/wasm/keeper/keeper.go	78.16% <100.00%> (-0.11%)	⬇️
x/wasm/keeper/keeper_cgo.go	95.34% <100.00%> (ø)
tests/wasmibctesting/utils.go	0.00% <0.00%> (ø)

... and 1 file with indirect coverage changes

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[pinosu]

Great work! LGTM 💯