Crownstone router firmware 0.1

Pre-release of Crownstone router firmware.

Features

• Custom made protocol for data communication, results and commands
• Communication with upto 3 devices over UART, labeled as RS485, RS232 and Raspberry Pi CM4. The CM4 communication happens using a uart packet format specified in the protocol.
• Communication with websocket, on hardcoded IP address or domain
• Wifi connectivity, with hardcoded SSID and PSK
• HTTP requests (no handling yet)