Set up manifest and basic mqtt connection to adafruit io

src/background/index.js

@@ -0,0 +1,11 @@
+import { subscribeToAllSensors } from "./api";
+import dotenv from "dotenv";
+
+dotenv.config();
+
+chrome.runtime.onInstalled.addListener(() => {
+  subscribeToAllSensors({
+    onHeartbeat: (heartbeatData) => console.log(heartbeatData),
+    onTilt: (tiltData) => console.log(tiltData),
+  });
+});