Advanced logging

Enable to set --log-format structured | json | text and --log-level debug | info | warn | error. Default is log format structured and log level info. Log format text ignores log level setting and defaults to info.

Full Changelog: 1.1.0...1.2.0

Add Prometheus metrics endpoint

Add optional endpoint named /metrics for exposing clock frequencies, CPU temperature, and voltage usage as Prometheus metrics.

Full Changelog: 1.0.0...1.1.0

Raspberry Pi information 🍌

Signed-off-by: Tobias Schäfer <github@blackox.org>