refactor, new model e.t.c.

argenta/command/flag/input_flag/entity.py

@@ -0,0 +1,18 @@
+from re import Pattern
+from typing import Literal
+
+from argenta.command.flag.base_flag.entity import BaseFlag
+
+
+class InputFlag(BaseFlag):
+    def __init__(self, flag_name: str,
+                 flag_prefix: Literal['-', '--', '---'] = '--',
+                 possible_flag_values: list[str] | Pattern[str] | False = True):
+        super().__init__(flag_name, flag_prefix, possible_flag_values)
+        self._flag_value = None
+
+    def get_value(self):
+        return self._flag_value
+
+    def set_value(self, value):
+        self._flag_value = value