feat: add new query to get a swap (backport #1387)

[mergify]

Description

• Add new query to get a swap
• Add missing swagger fswap entry for generation
  • Add new URL for fswap's query json to client/docs/config.json
• Fix for missing pagination for QuerySwapsRequest CLI

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

---

This is an automatic backport of pull request #1387 done by [Mergify](https://mergify.com).

[mergify]

Cherry-pick of 92ad675 has failed:

On branch mergify/bp/release/v0.49.x/pr-1387
Your branch is up to date with 'origin/release/v0.49.x'.

You are currently cherry-picking commit 92ad67530.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   CHANGELOG.md
	modified:   client/docs/config.json
	modified:   docs/core/proto-docs.md
	modified:   proto/lbm/fswap/v1/query.proto
	modified:   x/fswap/client/cli/query.go
	modified:   x/fswap/keeper/grpc_query.go
	new file:   x/fswap/keeper/grpc_query_test.go
	modified:   x/fswap/testutil/expected_keepers_mocks.go
	modified:   x/fswap/types/msgs.go
	modified:   x/fswap/types/msgs_test.go
	modified:   x/fswap/types/query.pb.go
	modified:   x/fswap/types/query.pb.gw.go

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   client/docs/swagger-ui/swagger.yaml

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

[codecov]

Codecov Report

Attention: Patch coverage is 75.00000% with 6 lines in your changes are missing coverage. Please review.

Project coverage is 68.93%. Comparing base (27c7599) to head (68bebbd).

Additional details and impacted files

@@               Coverage Diff                @@
##           release/v0.49.x    #1389   +/-   ##
================================================
  Coverage            68.93%   68.93%           
================================================
  Files                  671      671           
  Lines                69260    69284   +24     
================================================
+ Hits                 47743    47760   +17     
- Misses               19235    19240    +5     
- Partials              2282     2284    +2     

Files	Coverage Δ
x/fswap/keeper/grpc_query.go	17.46% <70.00%> (+9.91%)	⬆️
x/fswap/types/msgs.go	32.95% <78.57%> (+8.63%)	⬆️

... and 1 file with indirect coverage changes