add expertise level

Author: monkbroc

blueprint.yaml

@@ -1,9 +1,8 @@
-id: particle/tracker-edge
 slug: particle-tracker-edge
 type: solution
 category: "Reference applications"
-expertiseLevel: ""
-tags: ["tracker"]
+expertiseLevel: "intermediate"
+tags: ["monitor-edge", "tracker", "sensors" "industrial"]
 icon: assets/particle-logo.svg
 gitrepo: https://github.com/particle-iot/tracker-edge
 name: "Tracker Edge"