refactor: unify pool query in pool manager, deprecate x/gamm, remove from CL module

[p0mvn]

Closes: #XXX

What is the purpose of the change

This PR unifies the Pool query for balancer, stableswap and CL pools in the x/poolmanager module. It removes the corresponding query from the CL module as x/poolmanager should be the only correct entry point.

In x/gamm, it deprecates the corresponding query to maintain backward compatibility. The logic calls in the x/poolmanager keeper that now routes calls.

Simlar is done for the CLI.

Brief Changelog

• implement Pool query in x/poolmanager
• refactor x/gamm to call the pool manager's keeper
• remove the query and CLI from `x/concentrated-liquidity

Testing and Verifying

This change is a trivial rework / code cleanup without any test coverage.

Documentation and Release Note

• Does this pull request introduce a new feature or user-facing behavior changes? yes
• Is a relevant changelog entry added to the Unreleased section in CHANGELOG.md? yes
• How is the feature or change documented? not applicable

[czarcas7ic]

Awesome job getting this out so fast. I think we are good to merge to unblock frontend. All logic LGTM