ESP32-C6: Implement Interactive Serial CLI

[alieissa-commits]

Description

Create a dedicated CLI thread listening for operator commands over the virtual serial port. The CLI will allow users to dynamically change sampling frequencies, check system statuses, and read back buffered logs.

Tasks

• Create the cli_thread to monitor serial keyboard inputs.
• Implement an interactive command-line parser supporting core commands (help, status, read, set_rate).
• Hook the set_rate command to dynamically adjust the underlying TX_TIMER period.
• Implement the read command to format and dump stored telemetry buffers from the dynamic byte pool to the terminal.