Add example to run sample Glue and EMR Jobs with RAEDME

[vara-bonthu]

Add an example to trigger a simple python job

• Add a new folder samples under examples
• Add a readme with steps to execute the jobs

[ricsue-aws]

As discussed, for the purpose of getting the MWAA Terraform module up and running, all we need is a simple DAG which I have created. will issue a PR shortly with it.

[ricsue-aws]

typical folder structure is to have sample dags in a "dags" folder - do you want this under the examples or in the root?

[vara-bonthu]

Closing this issue. Basic example added by Ricardo