v0.0.5 of metadata_web

A powerful web-specific metadata extraction implementation for Flutter, seamlessly integrating with web browsers to extract EXIF and media data. Changelog excerpt: - Added conditional export (dart.library.js_interop) so pana correctly detects platform support, fixing the pub.dev platform score (was 0/20). - Added non-web stubs for all public classes; they throw UnsupportedErrorat runtime on non-web platforms. - Updated metadata_coredependency to ^0.0.6(eliminates dart:iofrom the transitive import chain on web).