feat(extension-utils): created for String

Signed-off-by: kapdroid <kapilsharma130519@gmail.com>

lib/src/utils/extension_utils.dart

@@ -0,0 +1,16 @@
+//extension on String
+extension StringExtension on String {
+  String getTwoInitials() {
+    final stringChars = this.split("");
+    final first = stringChars.firstOrNull?.toUpperCase();
+    if (first == null) {
+      return this;
+    }
+
+    final words = this.trim().split(" ");
+    final last =
+        (words.last.length > 1 ? words.last.substring(0, 1) : stringChars.last)
+            .toUpperCase();
+    return "$first$last";
+  }
+}