e2e: adding simd controller msg server tests

[damiannolan]

Description

The existing e2e tests for ics27 rely on the intertx module and icad binary.
With the addition of the controller MsgServer we should also cover that execution path, which can be done using simd.

• Adding e2e tests for interchain accounts controller MsgServer
• Move intertx tests to separate files
• Update workflows to accommodate renaming and include new interchain accounts tests

I have created an issue below to track legacy code which can be removed when ibc-go/v5 reaches end-of-life.
Please feel free to add anything to this which is necessary.

• EOL: Remove v5.x legacy e2e tests and workflows #2593

Manual icad workflow runs using the new InterTxTestSuite and IncentivizedInterTxTestSuite:

• https://github.com/cosmos/ibc-go/actions/runs/3328097126
• https://github.com/cosmos/ibc-go/actions/runs/3328099490

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write a little note why.

• Targeted PR against correct branch (see CONTRIBUTING.md)
• Linked to Github issue with discussion and accepted design OR link to spec that describes this work.
• Code follows the module structure standards.
• Wrote unit and integration tests
• Updated relevant documentation (docs/) or specification (x/<module>/spec/)
• Added relevant godoc comments.
• Added a relevant changelog entry to the Unreleased section in CHANGELOG.md
• Re-reviewed Files changed in the Github PR explorer
• Review Codecov Report in the comment section below once CI passes

[chatton]

Nice job! 💚 All the workflow changes look good to me. Happy to get this merged once we've confirmed that all the tests pass when manually triggering them from this branch.

🥇

[damiannolan]

I just spotted the incorrect struct was embedded in the IncentivizedInterTxTestSuite. Updated and will let workflows complete before merging