re-add emoji picker

Change-Id: Ice06e116ebf061d4d200c69647c8a3482e0489b4
diff --git a/client/package.json b/client/package.json
index 26e650e..df27980 100644
--- a/client/package.json
+++ b/client/package.json
@@ -9,6 +9,7 @@
     "@testing-library/jest-dom": "^4.2.4",
     "@testing-library/react": "^9.5.0",
     "@testing-library/user-event": "^7.2.1",
+    "emoji-picker-react": "^3.4.4",
     "react": "^16.13.1",
     "react-dom": "^16.13.1",
     "react-emoji-render": "^1.2.4",