Add microdot for HTTP

pico/src/main.py

@@ -1,10 +1,18 @@
 import asyncio
 
+from vendor.microdot import Microdot, Request
+
 from statusled import STATUS_LED
 from log import Logger, Color
 from sensors.ultrasonic import UltraSonicSensor
 from connection import ensure_network
 
+app = Microdot()
+
+@app.route("/")
+async def index(_request: Request):
+    return "Hello from pico"
+
 async def read_sensor():
     log = Logger("tank", Color.CYAN)
     sensor = UltraSonicSensor(22, 21)
@@ -22,6 +30,7 @@ async def _main():
         STATUS_LED.task(),
         ensure_network(),
         read_sensor(),
+        app.start_server(port=80)
     )