Validate the architecture of given container image

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**Tell us about your request**
What do you want us to build?

App Runner checks container image's architecture (e.g. amd64, arm64) for us and fails fast with proper error messages during its service creation.

**Describe alternatives you've considered**
A clear and concise description of any alternative solutions or features you've considered.

If App Runner supports various major architectures and then it automatically selects the right place to put given container image then I think this feature request won't be making any sense.

**Additional context**
Anything else we should know?

I don't make this kind of mistake with CI/CD pipelines but sometimes I build and push container images from my M1 Mac to ECR 😅

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