### Is there an existing issue for this?

- [X] I have searched the existing issues

### Feature description

It would be great if localstack supported AWS Resource Access Manager. This would allow for testing multi-account AWS Transit Gateway setups, for example.

### 🧑‍💻 Implementation

_No response_

### Anything else?

Related: https://github.com/localstack/localstack/issues/7041
from localstack.services.events.provider import EventsProvider
    from localstack.services.moto import MotoFallbackDispatcher
    provider = EventsProvider()
    return Service.for_provider(provider, dispatch_table_factory=MotoFallbackDispatcher)
@aws_provider()
def stepfunctions():
    from localstack.services.stepfunctions.provider import StepFunctionsProvider
    provider = StepFunctionsProvider()
    return Service.for_provider(
        provider,
        dispatch_table_factory=lambda _provider: HttpFallbackDispatcher(
            _provider, _provider.get_forward_url
        ),
    )
@aws_provider(api="stepfunctions", name="v1")
def stepfunctions_v1():
    from localstack.services.stepfunctions.provider import StepFunctionsProvider
    provider = StepFunctionsProvider()
    return Service.for_provider(
        provider,
        dispatch_table_factory=lambda _provider: HttpFallbackDispatcher(
            _provider, _provider.get_forward_url
        ),
    )
@aws_provider(api="stepfunctions", name="v2")
def stepfunctions_v2():