Support setting region on the resolver instantiation

[antoniordz96]

Description of the feature or enhancement:

Currently the AWS Resolver is picking the systems default AWS region. We have a use case where we want to synthesize both regions at the same time like aws cdk. Currently synthesis fails for one chart as its looking for stacks in the wrong region

Use Case:

Synthesize k8s manifest and allow it to automatically pick the correct region to grab stack output to be used in cdk8s chart

Proposed Solution:

Allowing to pass region via the constructor. It can be an optional field to make it backwards compatible defaulting to the current behavior

const k8sApp = new k8s.App({ resolvers: [new AwsCdkResolver(region='us-east-1')] });

• 👋 I may be able to implement this feature request

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This is a 🚀 Feature Request