feat(interchain-token-service): add its hub contract

[milapsheth]

Description

AXE-3820

• Allow setting/removing trusted ITS addresses by chain
• Route ITS call to the true destination

Todos

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

Steps to Test

Expected Behaviour

Other Notes

[codecov]

Codecov Report

Attention: Patch coverage is 94.58239% with 24 lines in your changes missing coverage. Please review.

Project coverage is 93.68%. Comparing base (a73560d) to head (a9b1290).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
interchain-token-service/src/contract.rs	86.88%	8 Missing ⚠️
interchain-token-service/src/bin/schema.rs	0.00%	7 Missing ⚠️
interchain-token-service/src/msg.rs	25.00%	3 Missing ⚠️
packages/axelar-wasm-std/src/response.rs	78.57%	3 Missing ⚠️
interchain-token-service/src/abi.rs	99.01%	1 Missing ⚠️
interchain-token-service/src/contract/execute.rs	98.78%	1 Missing ⚠️
interchain-token-service/src/primitives.rs	88.88%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #572      +/-   ##
==========================================
+ Coverage   93.66%   93.68%   +0.02%     
==========================================
  Files         226      233       +7     
  Lines       32583    32916     +333     
==========================================
+ Hits        30518    30837     +319     
- Misses       2065     2079      +14     

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