feat: FBOT-1000 added autosuggest functionality (#63)

Author: janbadura

package-lock.json

@@ -30,12 +30,15 @@
   "author": "Microsoft Corp",
   "license": "MIT",
   "dependencies": {
+    "@types/debounce": "^1.2.1",
     "@types/google.analytics": "0.0.40",
     "@types/qrcode": "^1.3.4",
     "adaptivecards": "1.0.0",
     "bluebird": "^3.5.1",
     "botframework-directlinejs": "0.9.15",
     "core-js": "2.4.1",
+    "debounce": "^1.2.1",
+    "downshift": "^6.1.7",
     "jspeech": "^0.1.1",
     "markdown-it": "8.3.1",
     "microsoft-speech-browser-sdk": "0.0.12",