implement: src/regex -- regex crate, parsing box scores and play descriptions

[BryanChasko]

topic: regex

the regex crate compiles patterns at startup for zero per-call overhead.

concepts to demonstrate

• Regex::new(), compile-once pattern
• Regex::is_match(), captures(), find_iter()
• named capture groups
• lazy_static! or OnceLock for compile-once regex

patriots theme

parse a play-by-play text file with patterns like:
"Brady pass complete to Branch for 23 yards"
extract: passer, target, yards, play type. build a box score from parsed plays.

file

src/regex/play_parser.rs

reference

python mirror: python_regex/ directory