change bot import in server.py Added index route

src/server.py

@@ -1,13 +1,18 @@
 import flask
 import telebot
 
-from .bot import bot
+from bot import bot
 
 app = flask.Flask(__name__)
 
 WEBHOOK_URL_PATH = "/{}".format(bot.token)
 
 
+@app.route("/")
+def index():
+    return "<h1>Index page</h1>"
+
+
 @app.route(WEBHOOK_URL_PATH, methods=["POST"])
 def webhook():
     if flask.request.headers.get("content-type") == "application/json":