feat: add nsattrbutedstring property to viewtext

TIUIKitCore/Sources/Extensions/ViewText/ViewText+NSAttributedString.swift

@@ -0,0 +1,9 @@
+public extension ViewText {
+    var attributedString: NSAttributedString? {
+        guard let text = text else {
+            return nil
+        }
+
+        return attributes.attributedString(for: text)
+    }
+}