feat: Terraform Custom Plan File Support

[mildaniel]

Which issue(s) does this change fix?

N/A

Why is this change necessary?

Support users who use Terraform Cloud by allowing them to pass a custom plan file instead of generating one.

How does it address the issue?

Creates a new command line option for passing a plan file and using that one in the Terraform hook instead of generating a plan file.

What side effects does this change have?

N/A

Mandatory Checklist

PRs will only be reviewed after checklist is complete

• Add input/output type hints to new functions/methods
• Write design document if needed (Do I need to write a design document?)
• Write/update unit tests
• Write/update integration tests
• Write/update functional tests if needed
• make pr passes
• make update-reproducible-reqs if dependencies were changed
• Write documentation

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[lucashuy]

Should we consider adding a check if hook name is provided, if it isn't then we raise a bad click option exception?