feat: introduce new modules(fswap, fbridge) (backport #1352)

[jaeseung-bae]

Description

• backport feat: introduce new modules(fswap, fbridge) #1352

Motivation and context

How has this been tested?

Screenshots (if appropriate):

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

Attention: Patch coverage is 33.58876% with 520 lines in your changes are missing coverage. Please review.

Project coverage is 69.33%. Comparing base (0dd215b) to head (6c5104c).

Additional details and impacted files

@@                 Coverage Diff                 @@
##           release/v0.49.x    #1357      +/-   ##
===================================================
- Coverage            69.75%   69.33%   -0.42%     
===================================================
  Files                  646      666      +20     
  Lines                67589    68371     +782     
===================================================
+ Hits                 47144    47406     +262     
- Misses               18255    18718     +463     
- Partials              2190     2247      +57     

Files	Coverage Δ
simapp/app.go	82.28% <100.00%> (+0.71%)	⬆️
x/fswap/keeper/calc.go	100.00% <100.00%> (ø)
x/fswap/keeper/keys.go	100.00% <100.00%> (ø)
x/fswap/handler.go	77.77% <77.77%> (ø)
x/fswap/types/config.go	0.00% <0.00%> (ø)
x/fbridge/keeper/keeper.go	52.94% <52.94%> (ø)
x/fswap/types/codec.go	40.00% <40.00%> (ø)
x/fswap/module_simulation.go	7.14% <7.14%> (ø)
x/fswap/keeper/msg_server.go	55.88% <55.88%> (ø)
x/fswap/types/genesis.go	32.00% <32.00%> (ø)
... and 11 more