Refactor alias module; Use HashSet to store RetAlias

This PR includes:

feat: remove the millisecond format in the log. Now the date format in logging is %H:%M:%S".
feat: change the log level from INFO to DEBUG in the alias module. Remove redundant logging messages.
feat: use std::collections::HashSet to store RetAlias so we can prevent duplicate aliases from the result.
refactor: fix most of the cargo clippy warnings in the alias module.

Artisan-Lab / RAP