refactor: Add pool to the state of x/foundation

[0Tech]

Description

This patch would add own pool (has treasury for now). Because the treasury can begin with a non-zero value, we should state the info in the its own genesis.

Checklist:

• I followed the contributing guidelines and code of conduct.
• I have added a relevant changelog to CHANGELOG.md
• I have added tests to cover my changes.
• I have updated the documentation accordingly.
• I have updated API documentation client/docs/swagger-ui/swagger.yaml

[codecov]

Codecov Report

Merging #693 (6c9264a) into main (551bc1c) will increase coverage by 0.01%.
The diff coverage is 97.91%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #693      +/-   ##
==========================================
+ Coverage   61.15%   61.17%   +0.01%     
==========================================
  Files         873      873              
  Lines       98421    98463      +42     
==========================================
+ Hits        60192    60237      +45     
+ Misses      34644    34639       -5     
- Partials     3585     3587       +2     

Impacted Files	Coverage Δ
x/foundation/keeper/keys.go	100.00% <ø> (ø)
x/foundation/keeper/treasury.go	94.54% <97.36%> (+7.58%)	⬆️
x/foundation/foundation.go	81.52% <100.00%> (+0.34%)	⬆️
x/foundation/genesis.go	76.85% <100.00%> (+0.66%)	⬆️
x/foundation/keeper/genesis.go	80.76% <100.00%> (+0.24%)	⬆️
x/collection/msgs.go	41.66% <0.00%> (-1.67%)	⬇️
x/wasm/keeper/keeper.go	85.80% <0.00%> (-0.37%)	⬇️
x/token/msgs.go	36.54% <0.00%> (+1.52%)	⬆️
crypto/keys/internal/ecdsa/privkey.go	84.21% <0.00%> (+1.75%)	⬆️
x/token/validation.go	90.90% <0.00%> (+20.00%)	⬆️