Add ble-scale-sync (#128)

* Add ble-scale-sync to Smart Home Hardware Interfaces

* Add website link

* Apply suggestion from @Copilot

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

---------

Co-authored-by: Peter Giacomo Lombardo <pglombardo@hey.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

README.md

@@ -115,6 +115,7 @@ Contributions welcome! Read the [contribution guidelines](contributing.md) first
 - [hivemq-mqtt-web-client](https://github.com/hivemq/hivemq-mqtt-web-client) - Browser-based MQTT client that utilizes MQTT over websockets. [Direct Link](https://www.hivemq.com/demos/websocket-client/)
 - [imqtt](https://github.com/shafreeck/imqtt) - Interactive MQTT packet manipulation shell based on IPython.
 - [IoT-Testware](https://projects.eclipse.org/projects/technology.iottestware) - The Eclipse IoT-Testware is a collection of conformance test suites for IoT protocols enriched with additional tools for fuzzing and performance testing.
+- [mockd](https://github.com/getmockd/mockd) - Multi-protocol mock server with a built-in MQTT broker supporting QoS 0-2, retained messages, topic patterns, and device simulation for IoT development and testing.
 - [moxy](https://github.com/jvermillard/moxy) - A Golang MQTT proxy providing useful output traces to monitor and troubleshoot your MQTT communications.
 - [MQTT Board](https://github.com/flespi-software/MQTT-Board) - Open-source diagnostic-oriented MQTT client tool.
 - [mqtt-admin](https://github.com/hobbyquaker/mqtt-admin/) - Web based MQTT frontend. [Direct Link](https://hobbyquaker.github.io/mqtt-admin/).
@@ -349,7 +350,8 @@ Here are complete firmwares to turn them into MQTT-controlled smart home nodes:
 ### Smart Home Hardware Interfaces
 
 - [airrohr2mqtt](https://c0d3.sh/smarthome/airrohr2mqtt) - Air quality monitoring integration.
-- [amcrest2mqtt](https://github.com/dchesterton/amcrest2mqtt) - Amcrest doorbell to MQTT bridge. Uses Home Assitant's MQTT discovery protocol.
+- [amcrest2mqtt](https://github.com/dchesterton/amcrest2mqtt) - Amcrest doorbell to MQTT bridge. Uses Home Assistant's MQTT discovery protocol.
+- [ble-scale-sync](https://github.com/KristianP26/ble-scale-sync) - BLE-to-MQTT bridge for smart scales (23 brands) with Home Assistant auto-discovery. Reads weight + impedance, calculates body composition, publishes all 11 metrics with LWT and display precision. [Website](https://blescalesync.dev).
 - [aqara-mqtt](https://github.com/monster1025/aqara-mqtt) - Aqara (Xiaomi) Gateway to MQTT bridge.
 - [aqara2mqtt](https://github.com/hobbyquaker/aqara2mqtt) - Attach [Aqara](https://www.aqara.com) Smart Hubs to MQTT.
 - [Bambuddy](https://github.com/maziggy/bambuddy) - Self-hosted management tool for Bambu Lab 3D printers using MQTT, with real-time monitoring, scheduling, and Home Assistant integration.