README: Add Membrowse badge (#12057)

README.md

@@ -8,6 +8,7 @@
 [![CLA assistant](https://cla-assistant.io/readme/badge/meshtastic/firmware)](https://cla-assistant.io/meshtastic/firmware)
 [![Fiscal Contributors](https://opencollective.com/meshtastic/tiers/badge.svg?label=Fiscal%20Contributors&color=deeppink)](https://opencollective.com/meshtastic/)
 [![Vercel](https://img.shields.io/static/v1?label=Powered%20by&message=Vercel&style=flat&logo=vercel&color=000000)](https://vercel.com?utm_source=meshtastic&utm_campaign=oss)
+[![MemBrowse](https://membrowse.com/badge.svg)](https://membrowse.com/public/meshtastic/firmware)
 
 <a href="https://trendshift.io/repositories/5524" target="_blank"><img src="https://trendshift.io/api/badge/repositories/5524" alt="meshtastic%2Ffirmware | Trendshift" style="width: 250px; height: 55px;" width="250" height="55"/></a>