Add GraphQL resolver, query to fetch group environment scopes

What does this MR do and why?

Related issue: #394750 (closed)

1. Adds a new GraphQL resolver to fetch group environment scopes

This new resolver is needed to lessen the load of fetching ALL environments, which would sometimes lead to 503s when the group has too many environments.

New Queries

Fetch all environment scopes (query plan):

SELECT "ci_group_variables"."environment_scope" FROM "ci_group_variables" WHERE "ci_group_variables"."group_id" = 6772326 GROUP BY "ci_group_variables"."environment_scope" ORDER BY "ci_group_variables"."environment_scope" LIMIT 100

Average query time: Time: 46.262 ms

Search for specific environment scope by name (query plan):

SELECT "ci_group_variables"."environment_scope" FROM "ci_group_variables" WHERE "ci_group_variables"."group_id" = 6772326 AND "ci_group_variables"."environment_scope" = '*' GROUP BY "ci_group_variables"."environment_scope" ORDER BY "ci_group_variables"."environment_scope" LIMIT 100

Average query time: Time: 3.280 ms

Search for similar environment scope names by the regular expression (query plan):

SELECT "ci_group_variables"."environment_scope" FROM "ci_group_variables" WHERE "ci_group_variables"."group_id" = 6772326 AND (LOWER(ci_group_variables.environment_scope) LIKE LOWER('%*%')) GROUP BY "ci_group_variables"."environment_scope" ORDER BY "ci_group_variables"."environment_scope" LIMIT 100

Average query time: Time: 27.820 ms

Screenshots or screen recordings

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Before	After

How to set up and validate locally

1. Navigate to the graphql explorer

http://localhost:3000/-/graphql-explorer. # can be different based on gdk config

2. Copy and paste and run the following query to the graphql explorer to test:

query {
  group(fullPath: "dmitry") {
    environmentScopes(first: 12, search: "production") {
      nodes {
        name
      }
    }
  }
}

Example of output:

{
  "data": {
    "group": {
      "environmentScopes": {
        "nodes": [
          {
            "name": "production"
          },
          {
            "name": "newscope"
          },
          {
            "name": "*"
          }
        ]
      }
    }
  }
}

Database Queries

TO BE DONE

MR acceptance checklist

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• I have evaluated the MR acceptance checklist for this MR.