Draft: Added scope for sorting all project_statistic display columns

What does this MR do and why?

Adds options to namespace projects GraphQL resolver to sort by multiple column's in ascending and descending order.

ref: https://gitlab.com/gitlab-org/gitlab/-/issues/389424

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How to set up and validate locally

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DB Queries

In scope of this task one new query was introduced (with ASC and DESC sorting), and one was modified (all three are ActiveRecord-driven queries)

New query introduced:

I am using the same query that was added as part of this MR, just opening that query for a 7 columns.

SELECT "projects".*, "project_statistics"."storage_size" AS project_statistics_storage_size FROM "projects" INNER JOIN "project_statistics" ON "project_statistics"."project_id" = "projects"."id" WHERE "projects"."namespace_id" IN (SELECT namespaces.traversal_ids[array_length(namespaces.traversal_ids, 1)] AS id FROM "namespaces" WHERE "namespaces"."type" = 'Group' AND (traversal_ids @> ('{22}'))) ORDER BY "project_statistics"."storage_size" ASC NULLS FIRST, "projects"."id" DESC LIMIT 21

Query plan with namespace.id = 1701395: https://console.postgres.ai/gitlab/gitlab-production-tunnel-pg12/sessions/16208/commands/55596

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