refactor(minor-axelarnet-gateway): msg and state separation

[fish-sammy]

Description

Todos

• Unit tests
• Manual tests
• Documentation
• Connect epics/issues

Convention Checklist

• Each contract should have a client mod for others to interact with it.
• Derive macros
  • EnsurePermissions: Contract permission control
  • IntoContractError: Conversion from custom contract errors to axelar_wasm_std::error::ContractError
  • IntoEvent: Event serialization
  • migrate_from_version: Contract version management in the migrate function
• The state mod and msg mod should use separate data structures so that internal state changes do not break the contract interface. Check out the interchain-token-service for reference.
  • msg.rs should never use any type from the state.rs
  • Shared types must be defined in a separate exported mod. If those types have already been defined somewhere else, then they should get re-exported in the exported mod

Steps to Test

Expected Behaviour

Notes

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 93.65%. Comparing base (541aad9) to head (5c2c487).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #756   +/-   ##
=======================================
  Coverage   93.65%   93.65%           
=======================================
  Files         222      222           
  Lines       36332    36338    +6     
=======================================
+ Hits        34028    34034    +6     
  Misses       2304     2304           

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