Add Stag gRPC server support

[codecov[bot]]

Codecov Report

Merging #17 (a9674e4) into main (5ad5930) will increase coverage by 0.05%. The diff coverage is 71.42%.

@@            Coverage Diff             @@
##             main      #17      +/-   ##
==========================================
+ Coverage   74.75%   74.81%   +0.05%     
==========================================
  Files          68       68              
  Lines        6394     6397       +3     
==========================================
+ Hits         4780     4786       +6     
+ Misses       1614     1611       -3     

Impacted Files	Coverage Δ
...ag-api/src/types/ics/core/ics24_host/identifier.rs	77.27% <60.00%> (+0.85%)	:arrow_up:
stag-api/src/event/tracing_event_handler.rs	100.00% <100.00%> (ø)
stag-api/src/signer/mnemonic_signer.rs	94.40% <100.00%> (ø)
...-api/src/transaction_builder/msg/connect/client.rs	98.95% <100.00%> (-0.02%)	:arrow_down:
stag-api/src/service/ibc_service/handshake.rs	48.80% <0.00%> (+0.47%)	:arrow_up:
stag-api/src/service/ibc_service/update_signer.rs	95.55% <0.00%> (+4.44%)	:arrow_up:

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.