Introduce explicit type QueryLanguage = string and update code to clarify

Previously:
- There is confusion between nameWithOwner and queryLanguage.  Both are strings.
  Between

        runResult, err := codeql.RunQuery(databasePath, job.QueryLanguage, queryPackPath, tempDir)
    (agent.go l205)

  and

        func RunQuery(database string, nwo string, queryPackPath string, tempDir string) (*RunQueryResult, error)

  QueryLanguage is suddenly name with owner in the code.

  Added some debugging, the value is the query language in the two places it gets used:

        server         | 2024/07/03 18:30:15 DEBUG Processed request info location="{Data:map[bucket:packs key:1]}" language=cpp
        ...
        agent          | 2024/07/03 18:30:15 DEBUG XX: is nwo a name/owner, or the original callers' queryLanguage? nwo=cpp
        ...
        agent          | 2024/07/03 18:30:19 DEBUG XX: 2: is nwo a name/owner, or the original callers' queryLanguage? nwo=cpp

Changes:
- Introduce explicit type QueryLanguage = string and update code to clarify
- inline trivial function

pkg/queue/types.go

@@ -5,13 +5,15 @@ import (
 	"mrvacommander/pkg/common"
 )
 
+type QueryLanguage string
+
 // AnalyzeJob represents a job specifying a repository and a query pack to analyze it with.
 // This is the message format that the agent receives from the queue.
 // TODO: make query_pack_location query_pack_url with a presigned URL
 type AnalyzeJob struct {
 	Spec              common.JobSpec                 // json:"job_spec"
 	QueryPackLocation artifactstore.ArtifactLocation // json:"query_pack_location"
-	QueryLanguage     string                         // json:"query_language"
+	QueryLanguage     QueryLanguage                  // json:"query_language"
 }
 
 // AnalyzeResult represents the result of an analysis job.