Feature/5.0.0 (#19) * chore: Update dependencies and upgrade Flutter to Dart 2.12.0 * chore: Update platform import for JS interop compatibility * chore: Update platform import for JS interop compatibility * chore: Update platform import for JS interop compatibility * chore: Update platform import for JS interop compatibility * Rename test file * chore: Update platform import for JS interop compatibility * Update example.png * Update example