Resolve "Create a SCIM specific token for group SSO [FE]"

What does this MR do?

This MR adds a new section to the bottom of the setting's page in order to handle SCIM Tokens

before	after (no token)	after (display token)

What are the relevant issue numbers?

#9406 (closed)

How do I test this locally?

You need to add the below to your config/gitlab.yml file

providers:
  - { name: 'group_saml' }

You'll also have to run Feature.enable(:group_scim) via the Ruby console in order to enable the feature flag.

Then select a group -> hover settings -> select SAML SSO

Does this MR meet the acceptance criteria?

• Changelog entry added, if necessary
• Documentation created/updated via this MR
• Documentation reviewed by technical writer or follow-up review issue created
• Tests added for this feature/bug
• Tested in all supported browsers
• Conforms to the code review guidelines
• Conforms to the style guides
• Link to e2e tests MR added if this MR has Requires e2e tests label. See the Test Planning Process.
• EE specific content should be in the top level /ee folder

To do

• Complete ajax for generating token
• Add loader while ajax processes
• Add JS for correctly rendering the SCIM token panels i.e. generate, view, hidden password
• Complete tests
• Add error handling for ajax calls
• Fix bug where JS doesn't reload after saving form