tracking: std/log improvements

[iuioiua]

This issue tracks possible improvements that can be made to the std/path sub-module. Ideas are welcome. It'd be good to also discuss the requirements of this sub-module.

• suggestion(log): Logger warn() method instead of warning() #4099
• suggestion(log): remove underscore prefix from private methods/properties #4103
• suggestion: re-structure std/log to adhere to singe-export files #4174
• suggestion: remove flattenArgs() from log/formatters.ts public API #4175

[babiabeo]

@iuioiua I think this issue can be closed.

[iuioiua]

Yep! Thanks!