feat: lambda worker - support maxConcurrency (SqsEventSource)

[nemanja-kovacevic-thinkit]

resolves: https://techfromsage.atlassian.net/browse/PLT-83

This PR adds support for maxConcurrency property in LambdaWorker (SqsEventSource)

[kiyanwang]

I think that's looking ok for exposing the new optional property, I think all this now needs is the tests updating, to verify that if you set the property the it really is exposed:

• https://github.com/talis/talis-cdk-constructs/blob/main/test/infra/lambda-worker/lambda-worker.test.ts
• https://github.com/talis/talis-cdk-constructs/tree/main/test/integration/lambda-worker

[kiyanwang]

what is the default value maxConcurrency gets set to if you don't specify a value?
does it need a default value i.e. maxConcurrency: props.lambdaProps.queueMaxConcurrency ?? <some default>, or do we only set the property if a value for queueMaxConcurrency is set?

[nemanja-kovacevic-thinkit]

By default, maxConcurrency has no specific limit - uses up to maximum concurrency allowed by AWS.
I would add default value only if we internally know that there is some value that suits us for our use cases. Otherwise, I think that just forwarding a parameter and leaving default behavior is the best option.

[kiyanwang]

Lets not make this an optional property, lets make it a mandatory property. This is a breaking change, but will force us to enumerate the max concurrency for every use case, which is actually the right thing to do.

[talisaspire]

🎉 This PR is included in version 3.2.0 🎉

The release is available on GitHub release

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