[pymesh] Updated to v1.0.1 (fw release v1.20.2.rc11, pybytes v1.5.2)

[catalinio]

Added Pymesh v1.0.1 scripts, released as frozen in firmware v1.20.2.rc11 (available in Pybytes OTA). Added:

• pymesh.cli_start() method, and stop command in CLI to terminate it
• debug level can be both read and written
• additional setting tx_pow CLI command (to set LoRa Radio modem TX power, in range of 2-20 dBm)
• debug prints instead of plain print
• printing lora.stats() (important is the RSSI), for each packet received