feature-request: Support multiple options in Function::CodeUri section

[godrose]

Description:

Need more options for specifying the code to be packaged before deployment

I have a case when there's certain replaceable part of the code which is required only for the certain configuration of the lambdas. I want to be able to omit if from the package so it never gets deployed.
This of course is relevant for the runtimes when there's no actual compilation artifacts, like Node

I was thinking about something like:

Globals:
  Function:
    CodeUri: ./src |
      !./src/folder-i-want-to-omit

In short something like .gitignore. I would call this .samignore ;)

[jfuss]

This is actually a SAM CLI/Lambda Builders feature request not a SAM Spec. We have various requests for similar things already: aws/aws-lambda-builders#185, aws/aws-sam-cli#3350, aws/aws-sam-cli#1360, and aws/aws-sam-cli#858.

We likely need to combine those into a single one but will handle outside this issues.

Closing this as a duplicate of other requests in the correct repo (SAM CLI/Lambda builders).