feat(vaunt): add vaunt config

.vaunt/config.yaml

@@ -0,0 +1,20 @@
+version: 0.0.1
+achievements:
+  - achievement:
+      name: Visionary Architect
+      icon: https://https://raw.githubusercontent.com/answerdev/answer/main/.vaunt/enhancement.png
+      description: Awarded for bringing up enhancement, dream big!
+      triggers:
+        - trigger:
+            actor: author
+            action: issue
+            condition: labels in ['enhancement'] & labels in ['LGTM']
+  - achievement:
+      name: Bug Hunter
+      icon: https://https://raw.githubusercontent.com/answerdev/answer/main/.vaunt/bug.png
+      description: Awarded for identifying real bugs, well spotted!
+      triggers:
+        - trigger:
+            actor: author
+            action: issue
+            condition: labels in ['bug'] & labels in ['LGTM']