v2.0.0-dev.22

• Please refer to https://fzyzcjy.github.io/flutter_rust_bridge/guides/miscellaneous/whats-new for what's changed in V2.
• Automatically upgrade flutter_rust_bridge Dart/Rust runtime versions when running generate #1704
• Fix failure of formatting Dart code when path is too long #1702
• Add checks when build_runner needs to be a dependency #1695
• Fix generated code is breaking cargo test because of its doc-test contains a moved import #1706
• Add uuid and chrono for SSE codec (the CST/DCO codec already supports it) #169
• Add example using build.rs #1696
• Add doc about movement of things like StreamSink #1703
• Add tests and doc about multiple Dart Isolates #1699