Receive Denom as Query String in Req

[Kbhat1]

Describe your changes and provide context

• Adopts similar approach to cosmos-sdk https://github.com/cosmos/cosmos-sdk/blob/main/x/bank/proto/cosmos/bank/v1beta1/query.proto
• Updates SupplyOf to receive denom as query string
• Creates new DenomMetadataByQueryString to receive denom as query string

Testing performed to validate your change

• Verifying on node
• Added unit tests

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 11 lines in your changes missing coverage. Please review.

Project coverage is 55.30%. Comparing base (bf9783f) to head (97cf445).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #518      +/-   ##
==========================================
- Coverage   55.31%   55.30%   -0.01%     
==========================================
  Files         631      631              
  Lines       54226    54237      +11     
==========================================
+ Hits        29993    29994       +1     
- Misses      22089    22099      +10     
  Partials     2144     2144              

Files	Coverage Δ
x/bank/keeper/grpc_query.go	44.96% <0.00%> (-3.59%)	⬇️

... and 1 file with indirect coverage changes