Add detailed docstrings for String class and its methods to enhance documentation and clarify functionality.

Author: n1nj4t4nuk1

pyvalueobjects/strings/string.py

@@ -3,13 +3,25 @@
 
 
 class String(ValueObject):
+    """
+    A value object representing a string. Inherits from ValueObject and validates that the input is a string.
+    """
 
     _ALLOWED_INPUT_TYPES = {str, int, float, bool}
 
     def __init__(self, value: str):
+        """
+        Initialize the String object with the given string value.
+        :param value: A string value.
+        """
         super().__init__(value)
 
     def _validate(self, value):
+        """
+        Validate that the given value is a string.
+        :param value: The value to validate.
+        :raises: ValueObjectError if the value is not a string.
+        """
         super()._validate(value)
         input_type = type(value)
         if input_type != str: