Add Ref mcp server config (github#47)

Author: MatthewDailey

servers/Ref/server.yaml

@@ -0,0 +1,20 @@
+name: Ref
+image: mcp/ref-tools-mcp
+type: server
+meta:
+    category: devops
+    tags:
+        - devops
+        - documentation
+about:
+    title: Ref - up-to-date docs
+    description: Ref powerful search tool connets your coding tools with documentation context. It includes an up-to-date index of public documentation and it can ingest your private documentation (eg. GitHub repos, PDFs) as well.
+    icon: https://avatars.githubusercontent.com/u/210568548?v=4
+source:
+    project: https://github.com/ref-tools/ref-tools-mcp
+config:
+    description: Configure the connection to Ref
+    secrets:
+        - name: Ref.REF_API_KEY
+          env: REF_API_KEY
+          example: ref-abcdefghi123