feat: add martin-tracing-utils for configuring tracing (1/3)

[CommanderStorm]

This is the first PR to break out of #1720 to make it reviewable.

The purpose is mainly to see if the added utilities are

• read & undaerstandable
• not magic for others and
• not too verbose
• and the name martin-tracing-utils okay.

Current usage of this code would be

// since logging is not yet available, we have to manually check the locations
let log_filter = LogLevel::from_argument("--log-level")
    .or_in_config_file("--config", "log_level")
    .or_env_var("MARTIN_LOG_FORMAT")
    .lossy_parse_to_filter_with_default("martin=info");
let log_format = LogFormat::from_argument("--log-level")
    .or_in_config_file("--config", "log_format")
    .or_env_var("RUST_LOG")
    .or_default(LogFormatOptions::Compact);
MartinObservability::from((log_filter, log_format))
    .with_initialised_log_tracing()
    .set_global_subscriber();

[CommanderStorm]

@nyurik @sharkAndshark might it be possible to get an review on this one? 👉🏻👈🏻

This would really help me push towards #1720 which (for me) currently kind of blocks the refactoring #1805 (comment)