Add utility method getProjectVersionImplementationStatus

[Pl217]

implementationStatus is not a real column on projectVersion table, but rather a function that computes implementation status and can return one of four string values. Since using DB functions is considered legacy, this method recreates the logic in code.

For the record, the DB function we're recreating looks like this:

CREATE FUNCTION public."implementationStatus"(
  public."projectVersion"
) RETURNS CHARACTER VARYING
    LANGUAGE SQL STABLE
    AS $_$
SELECT
  (
    CASE
      WHEN "project"."currentPublishedVersionId" = $1."id" THEN 'published'
      WHEN "project"."currentPublishedVersionId" IS NULL
      AND $1."id" = "project"."latestVersionId" THEN 'unpublished'
      WHEN "project"."currentPublishedVersionId" IS NOT NULL
      AND $1."id" = "project"."latestVersionId" THEN 'draft'
      ELSE 'archived'
    END
  )
FROM
  "project"
WHERE
  "project"."id" = $1."projectId" $_$;