feat: adding x/cwica module

[spoo-bar]

x/cwica module enables Cosmwasm based smart contracts to register ICA accounts and send transactions to be executed on counterparty chains

The module spec can be found in: x/cwica/spec

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 63.19846% with 191 lines in your changes are missing coverage. Please review.

Project coverage is 64.47%. Comparing base (3b8fb60) to head (db3c309).

Files	Patch %	Lines
x/cwica/types/tx.go	36.61%	45 Missing :warning:
x/cwica/keeper/ibc_handlers.go	66.99%	29 Missing and 5 partials :warning:
x/cwica/keeper/msg_server.go	73.77%	27 Missing and 5 partials :warning:
x/cwica/module.go	59.64%	23 Missing :warning:
x/cwica/ibc_module.go	10.00%	18 Missing :warning:
x/cwica/types/params.go	50.00%	13 Missing and 1 partial :warning:
x/cwica/types/codec.go	42.85%	8 Missing :warning:
x/cwica/keeper/params.go	62.50%	4 Missing and 2 partials :warning:
x/cwica/genesis.go	63.63%	2 Missing and 2 partials :warning:
x/cwica/types/errors.go	0.00%	3 Missing :warning:
... and 2 more

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #542 +/- ## ========================================== - Coverage 64.62% 64.47% -0.16% ========================================== Files 88 102 +14 Lines 4851 5368 +517 ========================================== + Hits 3135 3461 +326 - Misses 1550 1726 +176 - Partials 166 181 +15 ```

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