Added string class to utils

src/cpl/utils/string.py

@@ -0,0 +1,11 @@
+import re
+
+
+class String:
+
+    @staticmethod
+    def convert_to_snake_case(name: str) -> str:
+        pattern1 = re.compile(r'(.)([A-Z][a-z]+)')
+        pattern2 = re.compile(r'([a-z0-9])([A-Z])')
+        file_name = re.sub(pattern1, r'\1_\2', name)
+        return re.sub(pattern2, r'\1_\2', file_name).lower()