WIP: Learning GraphQL: Data types

WARNING! this is a learning MR, please, do not merge

What does this MR do?

This is a solution for https://gitlab.com/brytannia/graphql---internal-gitlab-internship/issues/2 and https://gitlab.com/brytannia/graphql---internal-gitlab-internship/issues/3

It's wip, I haven't added tests yet. This MR contains

• new fields on Project type, I've played with different resolves here.
• the field vulnerable contains an argument.

Screenshots

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• Documentation created/updated or follow-up review issue created
• 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