Add Manual approval to CodePipeline #16
Description
Add Manual approval to CodePipeline such that our pipelines will only run after we manually trigger them.
Add a manual approval action to a pipeline in CodePipeline - https://docs.aws.amazon.com/codepipeline/latest/userguide/approvals-action-add.html
Needed as we want to avoid CodePipeline from running when it is first deployed.