Start of contributing, adding lock and stale (as per example from Juiceshop

.github/stale.yml

@@ -0,0 +1,14 @@
+---
+daysUntilStale: 90
+daysUntilClose: 14
+exemptLabels:
+  - bounty
+  - challenge
+  - critical
+  - feature
+  - technical debt
+staleLabel: stale
+markComment: >
+  This issue has been automatically marked as `stale` because it has not had
+  recent activity. :calendar: It will be _closed automatically_ in one week if no further activity occurs.
+closeComment: false