chore: add firebase.json for testing

Author: jelbourn

firebase.json

@@ -0,0 +1,12 @@
+{
+  "firebase": "material2-test",
+  "public": "dist",
+  "ignore": [
+    "firebase.json",
+    "**/.*",
+    "**/node_modules/**",
+    "tmp",
+    "deploy",
+    "typings"
+  ]
+}