Any VS Code extensions that offer IntelliSense to help with defining iamRoleStatements?

I have one lambda function defined in my serverless.yml file that looks like this:

    handler: handler.my_function
      - Effect: "Allow"
          - s3:GetObject
          - s3:PutObject
          - "arn:aws:s3:::my-bucket/*"
      - http:
          path: url-path
          method: get
          cors: true

I’m attempting to update this so that the function also gets invoked from a specific SNS topic. There is a promising snippet extension, but what I’m looking for is something that brings up IntelliSense right after typing the " - " inside iamRoleStatements -> Action block. So that there is a list of all the different service types (like ec2, s3, sns, logs, etc.) Then typing ‘:’ after that service would bring up all the possible actions relevant to that service.

I’d be willing to build this sort of functionality into a new extension if anyone points me in the right direction. But I’m posting here first to make sure I don’t recreate the wheel if it already exists.

Typing ‘serverless’ into the Extensions search within VS Code only results in 2 as of now: