Pipeline Onboarding and Document Uploading

This pull request enables the script:

• To onboard pipelines.
• To upload documents associated with each solution. Document storage is a three-step process:
  1. Storing the document on Graphene's Nexus repository.
  2. Creating a document using Graphene's document controller API. And storing the nexus link of the document.
  3. Creating an association between the solution and the document available on the Graphene.