Try to generalize GraphQL startupJS approach

What does this MR do?

Refactor StartupJS for GraphQL

This refactors our StartupJS for GraphQL to be a Apollo Link 0 based application. Instead of manually filling the cache, we build an interceptor which "short-circuits" the Apollo Link pipeline in case the query can be found in StartupJS. In case the query fails, is not cached, has different variables, is done more than once, we skip it down the pipeline. Also if all Startup Queries have been done, it self-disables.

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• Documentation (if required)
• Code review guidelines
• Merge request performance guidelines
• Style guides
• Database guides
• Separation of EE specific content

Availability and Testing

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.
• Tested in all supported browsers
• Informed Infrastructure department of a default or new setting change, if applicable per definition of done

Security

If this MR contains changes to processing or storing of credentials or tokens, authorization and authentication methods and other items described in the security review guidelines:

• Label as security and @ mention @gitlab-com/gl-security/appsec
• The MR includes necessary changes to maintain consistency between UI, API, email, or other methods
• Security reports checked/validated by a reviewer from the AppSec team