v0.0.1 of flutter_timezone_ffi

A high-performance Flutter plugin to get device timezone using FFI for synchronous access. Changelog excerpt: - Initial release of the flutter_timezone_ffiplugin. - Synchronous device timezone access via dart:ffi: getLocalTimezone(), getTimezoneAbbreviation(), getUtcOffsetSeconds(), and getUtcOffset(). - Support for Android, iOS, macOS, Windows, and Web (via the browser IntlAPI).