ST BLE Mesh

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- Support for MultiApp Key
- Updated UI for detailed configuration
- Color Wheel for HSL model
- Support for Mesh Smart-Plug (STEVAL-BLUEPLUG1: https://www.st.com/en/evaluation-tools/steval-blueplug1.html)
- Support for Mesh BlueTile (STEVAL-BCN002V1B: https://www.st.com/en/evaluation-tools/steval-bcn002v1b.html)
- Lighting Control Model added in SDK
- Sensor descriptor features incorporated