feat: Adding pipeline type to module and provided a working example

[Roondel]

what

Adding pipeline_type to the module to set whether V1 or the newer V2 version is deployed.

why

This feature will allow for both github and bitbucket pipelines to de deployed as version 2.

references

https://docs.aws.amazon.com/codepipeline/latest/userguide/pipeline-types.html

[joe-niland]

Hi @Roondel
I spoke to the team. Would you be able to add support for the other v2 features (trigger, variable, execution modes) and then we'll see what the best course of action is? Allowing v2 to be set doesn't have much effect otherwise.

I can help with changes/testing, as we use CodePipeline with our clients.