Add symfony/google-chat-notifier recipe

Author: GromNaN

symfony/google-chat-notifier/5.2/manifest.json

@@ -0,0 +1,6 @@
+{
+    "env": {
+        "#1": "See https://developers.google.com/hangouts/chat/how-tos/webhooks",
+        "#2": "GOOGLE_CHAT_DSN=googlechat://ACCESS_KEY:ACCESS_TOKEN@default/SPACE?threadKey=THREAD_KEY"
+    }
+}