chore(github): add label scope:tests

Signed-off-by: Lexus Drumgold <unicornware@flexdevelopment.llc>

Author: unicornware

.github/labels.yml

@@ -54,6 +54,10 @@
  description: package release
  color: 74cefc
 
+- name: scope:tests
+ description: testing
+ color: 74cefc
+
 - name: scope:types
  description: type definitions
  color: 74cefc