Create "Single Sign On (SSO) service" page for Tech Docs website

[ThibaultBC]

Create a page outlining an overview of the Single Sign On (SSO) service. Check the existing content in Pre-reading material and in the docs that Carles put together.

Acceptance criteria:

• [ ] create a draft page on Google Drive for the Single Sign On (SSO) service. (re-use the existing content as much as possible but try to shorten/simplify if possible)
• [ ] sign off by Warren, Abi and Max
• [ ] hand over to Pilar to finalizing

Context: Selected as a top 10 article for technical documentation: https://app.zenhub.com/workspaces/cloud-pathfinder-5e4dbb426c3c6af8dcbf06a7/issues/gh/bcgov/cloud-pathfinder/2590

[MaxWardle]

I think this one would be useful for onboarding. Could build off of what I've written in the provision-a-project-set.md document. Should include screenshots.

outline:

• Login -> touch on Azure AD and give the "cschelp.gov.bc.ca" inbox to request to be added to the azure ad pool
  • talk about IDIR only access, gives added security of gov only entities. Someone leaves gov, IDIR access is removed.
• Talk about the different tabs
• Talk about account numbers, licence plate, environment
  • links to project set documentation
• Talk about metadata, roles, and buttons
  • touch on RBAC only access to accounts
  • touch on how credentials are ephemeral