feat: collect gateway integration response resources

[moelasmar]

map aws_api_gateway_method_response terraform resources to a dummy internal CFN resource Internal::ApiGateway::Method::Integration::Response that will be used later to update the method resources .

Mandatory Checklist

PRs will only be reviewed after checklist is complete

• Add input/output type hints to new functions/methods
• Write design document if needed (Do I need to write a design document?)
• Write/update unit tests
• Write/update integration tests
• Write/update functional tests if needed
• make pr passes
• make update-reproducible-reqs if dependencies were changed
• Write documentation

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