Enable writing Middleware code for lambda handler

[ritigupt1]

Is your feature request related to a problem? Please describe.

I was working on adding retry and error/exception handling to the lambda written in Java when I came across an AWS reinvent talk where best practices to handle the errors was told. There was a mention of writing Middleware code to centralise the error/exception handling and for some runtimes like Python and Node.js AWS Lambda powertools already provide a way to do this using annotations. For Java, we are missing this feature in Powertools. Describe the solution you'd like

Powertools to enable writing a middleware code which can be called before and/or after lambda function handler invocation. Describe alternatives you've considered

Additional context

[jeromevdl]

See what/how python is doing: https://docs.powertools.aws.dev/lambda/python/latest/utilities/middleware_factory/

[scottgerring]

De-prioritising due to backlog depth.

[phipag]

We are actively considering adding a Middleware approach now: https://github.com/aws-powertools/powertools-lambda-java/issues/2202.

Feedback there is very welcome.

[phipag]

I will mark this issue as closed in favor of the mini-RFC linked above.