chore(raiko-lib): auto logging

[35359595]

• automatic logging if RUST_LOG env not present is set to info level;
• println logs replaced with tracing::debug;
• logging levels demoted to debug on most chatty outputs;
• install script sources sp1 not only on CI but also if not found in current $PATH;

[dantaik]

you have to fix your PR title first, something like "chore(project_name): verb ..."

[petarvujovic98]

Good stuff here @35359595. Some of the println usage for progress/waiting feedback could get hidden behind a #[cfg(debug_assertions] so it's only visible when running in dev mode (e.g. people looking at the screen for progress), not suitable for tracing as that data doesn't help with either metrics or debugging after the fact.a

[johntaiko]

How is the progress going here?

It has some negative impacts on our production environment, and we hope it can be resolved ASAP :)