feat: add TextPainter? get painter

Author: drawcall

lib/src/node/text.dart

@@ -82,7 +82,7 @@ class ZKText extends ZKNode {
     this.setText(this.text);
   }
 
-  TextPainter? get painter() {
+  TextPainter? get painter {
     return _painter;
   }
 

pubspec.yaml

@@ -11,7 +11,7 @@ description: Zerker is a flexible and lightweight flutter canvas graphic animati
 # In iOS, build-name is used as CFBundleShortVersionString while build-number used as CFBundleVersion.
 # Read more about iOS versioning at
 # https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
-version: 2.2.2
+version: 2.2.3
 homepage: https://github.com/flutterkit/zerker
 
 environment: