feat(): add sample app

package.json

@@ -30,7 +30,8 @@
     "precommit": "lint-staged",
     "prepublish:npm": "npm run build",
     "publish:npm": "npm publish --access public",
-    "test": ""
+    "test": "",
+    "sample-app": "ts-node --transpile-only -r tsconfig-paths/register sample/main.ts"
   },
   "dependencies": {
     "telegraf": "https://github.com/telegraf/telegraf.git#develop"
@@ -48,6 +49,8 @@
     "prettier": "2.2.1",
     "reflect-metadata": "0.1.13",
     "rxjs": "6.6.3",
+    "ts-node": "^9.1.1",
+    "tsconfig-paths": "^3.9.0",
     "typescript": "4.1.2"
   },
   "peerDependencies": {