Update create pipeline endpoint to use GraphQL

Briley Sandlinrequested to merge
479123-pipeline-create-mutation into master

What does this MR do and why?

Related to #479123 (closed)

Updating pipeline create endpoint to use GraphQL instead of REST

Screenshots or screen recordings

No UI change

How to set up and validate locally

  1. In a project with CI set up, navigate to Build > Pipelines and run a new pipeline. Ex: http://gdk.test:3000/flightjs/Flight/-/pipelines/new
  2. Go to the network tab and insure that the mutation is successful
  3. The browser should navigate to a new pipeline.
Edited by Briley Sandlin

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