[Demo PR] Add terraform plan summary as comments in PR

[dineshba]

Signed-off-by: Dinesh B [email protected]

[github-actions]

tf-summarize output:

CHANGE	NAME
add	github_repository.terraform_plan_summary
	module.github["demo-repository"].github_branch.development
	module.github["demo-repository"].github_branch.main
	module.github["demo-repository"].github_repository.repository
	module.github["terraform-plan-summary"].github_branch.development
delete	module.github["terraform-plan-summary"].github_branch.demo
update	module.github["terraform-plan-summary"].github_repository.repository