chore: migrate tfe_oauth_client to framework#1661

ctrombley wants to merge 5 commits intomainhashicorp/terraform-provider-tfe:mainfrom

TF-25009-add-write-only-attributes-for-tfe-oauth-clienthashicorp/terraform-provider-tfe:TF-25009-add-write-only-attributes-for-tfe-oauth-clientCopy head branch name to clipboard