Feature/ws api (#72)

initial changes to support websockets as an alternative to webhooks

package.json

@@ -46,9 +46,11 @@
     "moment": "^2.29.1",
     "parse-url": "^5.0.7",
     "pino": "^6.13.4",
+    "short-uuid": "^4.2.0",
     "to-snake-case": "^1.0.0",
     "uuid": "^8.3.2",
     "verify-aws-sns-signature": "^0.0.6",
+    "ws": "^8.5.0",
     "xml2js": "^0.4.23"
   },
   "devDependencies": {
@@ -58,5 +60,9 @@
     "eslint-plugin-promise": "^4.3.1",
     "nyc": "^15.1.0",
     "tape": "^5.2.2"
+  },
+  "optionalDependencies": {
+    "bufferutil": "^4.0.6",
+    "utf-8-validate": "^5.0.8"
   }
 }