v0.1.2 of native_animated_image_ios

iOS implementation of native_animated_image (ships the Rust native binary). Changelog excerpt: - Switch the bundled Rust binary from static .ato dynamic framework (cdylib in a .frameworkbundle, packed into an xcframework with ios-arm64 + ios-arm64-simulator slices). - Why: static-lib FFI symbols get dead-stripped (no compile-time caller); -force_loadworkarounds break in Xcode 16's strict build-input validation. Dylib is loaded by dyld at app launch and every symbol is immediately visible to DynamicLibrary.process(). - Podspec simplified: just vendored_frameworkson the xcframewor[...]