Grafana/data: Fix theme types schema resolution (#116240)

* fix(grafana-data): copy theme schema json to types so declaration resolves

* refactor(grafana-data): move node scripts out of source code

* feat(grafana-data): generate types for theme schema

* chore(codeowners): update for grafana-data/scripts file move

* feat(grafana-data): put back copy plugin for theme json files

* revert(grafana-data): remove definition output

* feat(grafana-data): make builds great again

* minor tidy up

---------

Co-authored-by: Ashley Harrison <ashley.harrison@grafana.com>

scripts/validate-npm-packages.sh

@@ -11,6 +11,7 @@ failed_checks=()
 for file in "$ARTIFACTS_DIR"/*.tgz; do
   echo "🔍 Checking NPM package: $file"
 
+  # If you need to debug ATTW issues, pass "--format json" to get verbose output.
   if ! NODE_OPTIONS="-C @grafana-app/source" yarn attw "$file" --ignore-rules "false-cjs" --profile "node16"; then
     echo "attw check failed for $file"
     echo ""