Add `archived` argument to projects GraphQL query

What does this MR do and why?

This MR adds an archived argument to the Query.projects GraphQL query. This is needed for Migrate Your Work > Projects list to Vue and mo... (&13066) where we will be displaying archived and projects pending deletion in the Inactive tab and will be excluding them from other tabs.

MR acceptance checklist

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Screenshots or screen recordings

INCLUDE

EXCLUDE

ONLY

How to set up and validate locally

1. Find a project and go to Settings -> General -> Advanced
2. Click Archive project
3. Go to http://gdk.test:3000/-/graphql-explorer
4. Run the following queries

INCLUDE

query Projects {
  projects(archived: INCLUDE) {
    nodes {
      nameWithNamespace
      archived
    }
  }
}

EXCLUDE

query Projects {
  projects(archived: EXCLUDE) {
    nodes {
      nameWithNamespace
      archived
    }
  }
}

ONLY

query Projects {
  projects(archived: ONLY) {
    nodes {
      nameWithNamespace
      archived
    }
  }
}