implement change cursor to SystemMouseCursors.click when hovering a link styled text (#437)

Co-authored-by: KhanhNgocNguyen <khanhnguyen2@teqnological.asia>

lib/src/widgets/text_line.dart

@@ -184,6 +184,7 @@ class TextLine extends StatelessWidget {
     final style = textNode.style;
     var res = const TextStyle(); // This is inline text style
     final color = textNode.style.attributes[Attribute.color.key];
+    var hasLink = false;
 
     <String, TextStyle?>{
       Attribute.bold.key: defaultStyles.bold,
@@ -203,6 +204,9 @@ class TextLine extends StatelessWidget {
           res = _merge(res.copyWith(decorationColor: textColor),
               s!.copyWith(decorationColor: textColor));
         } else {
+          if (k == Attribute.link.key) {
+            hasLink = true;
+          }
           res = _merge(res, s!);
         }
       }
@@ -252,6 +256,13 @@ class TextLine extends StatelessWidget {
     }
 
     res = _applyCustomAttributes(res, textNode.style.attributes);
+    if (hasLink && readOnly) {
+      return TextSpan(
+        text: textNode.value,
+        style: res,
+        mouseCursor: SystemMouseCursors.click,
+      );
+    }
     return TextSpan(text: textNode.value, style: res);
   }