better log output

[2bndy5]

I want colored logs 🎨

This can be condition by using an env variable (CPP_LINTER_COLOR maybe?). It would require some alteration in the logger dependency though.

By default, we can have the color disabled in CI (like many other tools), but we can have color enabled during local (not CI) execution.

Less logs from dependencies

Currently the debug output includes logs from reqwest library:

DEBUG: starting new connection: https://api.github.com/
DEBUG: starting new connection: https://api.github.com/

This is rather superfluous to the end-user and shouldn't be shown. It just adds clutter to the log output.

[2bndy5]

Less logs from dependencies

This is actually related to not using asynchronous channels from tokio dependency. (related to #10 )

I'm still looking into that..