Refactor regex matching logic and migrate to regex-lite crate

[romanstingler]

• Replaced regex crate with regex-lite crate
• regex-lite lacks RegexSet functionality therefore =>
• Adjusted logic to match against all regexes explicitly.
• Introduced matches_any_regex closure to encapsulate regex match checks.
• Added iter_matches_any helper function to handle iterables.
• Reduced duplication in the logic for checking matches across pkg fields.

#613

[Morganamilo]

Is this noticeably slower at all? The RegexSet was the data structure perfectly suited for this and I assume it had some optimisations over just a Vec.

Also looking at our dependency tree:

• globset pulls in some regex stuff
• tr pulls in the regex crate

So this doesn't actually eliminate regex but pulls in another crate along side it.