Adding token factory specific denom endpoint

[dssei]

Describe your changes and provide context

When we create tokens using token factory, denoms are created in the factory/{owner_walltet_id}/{denom} format
E.g. factory/sei1gxskuzvhr4s8sdm2rpruaf7yx2dnmjn0zfdu9q/NEWCOIN

When querying metadata via /cosmos/bank/v1beta1/denoms_metadata/{denom} endpoint for such a denom we are getting error like

{
    "code": 12,
    "message": "Not Implemented",
    "details": []
}

This happens, because routing logic splits the denom uri param into 3 components rather then one and hence tries to router request to a non-existing handler. Url encoding does not help either as it still results in same issue. We would like to add additional endpoint to handle token factory created metadata retrieval, and move denom for the endpoint from uri param to query param.

so then for token factory created tokens the query would be
/cosmos/bank/v1beta1/token_factory/denoms_metadata?denom=factory/{owner_walltet_id}/{denom}

Testing performed to validate your change

Note: some demom tests were disables, and I have enabled them.

• Functional testing on local node with updated source
• unit/integration tests

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 55.52%. Comparing base (0320b34) to head (5411a07).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #457      +/-   ##
==========================================
+ Coverage   55.46%   55.52%   +0.05%     
==========================================
  Files         629      629              
  Lines       53541    53543       +2     
==========================================
+ Hits        29695    29728      +33     
+ Misses      21733    21700      -33     
- Partials     2113     2115       +2     

Files	Coverage Δ
x/bank/keeper/grpc_query.go	70.00% <100.00%> (+21.44%)	⬆️

... and 2 files with indirect coverage changes