app_review_dialog

chore: improve pub.dev score (description length, example, PopScope, …

• Shortened the pubspec description to fit pub.dev's length guidelines.
• Replaced deprecated WillPopScope with PopScope; bumped the minimum Flutter SDK to 3.22.0 accordingly.
• Raised the minimum url_launcher constraint to ^6.1.0 (the lowest version that provides the LaunchMode API this package relies on), fixing dart pub downgrade resolution.
• Added an example/ app.

• Breaking: AppReviewDialog.show() now always returns a non-null AppReviewDialogResult (tapping the modal barrier used to return null; it now resolves to AppReviewDialogAction.dismissed).
• Breaking: AppReviewDialogAction gained a new cancelled value. Tapping the explicit "Cancel" button now returns cancelled, while backing out via the device back button/gesture or tapping outside the dialog returns dismissed — callers can tell an explicit "no thanks" apart from an incidental dismissal.

• Initial release.
• 5‑star rating dialog with full‑point granularity.
• Two outcome paths: positive → "Rate in store" + "Support & Contribute"; negative → "Send us an email".
• Automatic locale detection (22 languages).
• Android market:// and iOS itms-apps:// deep links with HTTPS fallbacks.
• Theme‑aware (follows Material color scheme, light & dark).
• Every string overridable per invocation.
• minPositiveRating threshold, continueButtonLabel, storePackageName, appStoreId, supportWebsitePage parameters.
• Bounce animation on tapped star.