Release v1.0.0

parser: introduce strict mode as default mode to enforce that pgn sho…

…uld have a valid game result and optionally allow lax mode for parsing anyway (#6)

* docs: improve and correct the EBNF grammar

* feat: implement configurable parser with strict and lax modes

feat: add benchmarks and utility to handle pgn files with multiple ga…

…mes (#2)

* refactor(pgn): expose SplitMultiGame as a public utility

* refactor(project): organize tests and benchmarks into separate directories

* feat(examples): add multi-game example and reorganize project structure

refactor: reduce cyclomatic complexity of parseCoreMove