Preferences: Add read-only APIServer for preferences and dashboard stars (#106109)

pkg/registry/apis/preferences/legacy/sql_preferences_query.sql

@@ -0,0 +1,26 @@
+SELECT p.id, p.org_id,
+  p.json_data,
+  p.timezone,
+  p.theme,
+  p.week_start,
+  p.home_dashboard_uid,
+  u.uid as user_uid,
+  t.uid as team_uid,
+  p.created, p.updated
+ FROM {{ .Ident .PreferencesTable }} as p 
+ LEFT JOIN {{ .Ident .UserTable }} as u ON p.user_id = u.id
+ LEFT JOIN {{ .Ident .TeamTable }} as t ON p.team_id = t.id
+WHERE p.org_id = {{ .Arg .OrgID }} 
+{{ if .TeamUID }}
+  AND t.uid = {{ .Arg .TeamUID }}
+{{ else if .UserUID }}
+  AND (u.uid = {{ .Arg .UserUID }}
+  {{ if .CheckTeams }}
+   {{ if .HasTeams }} 
+   OR t.uid IN ({{ .ArgList .UserTeams }})
+   {{ end }}
+   OR p.user_id = 0
+  {{ end }}
+  )
+{{ end }}
+ORDER BY p.user_id asc, p.team_id asc, p.org_id asc