Banned users env, access validator, removed silent command, code quality improvements

src/validator/accessValidator.py

@@ -0,0 +1,10 @@
+from config.credentials import BANNED_USERS
+from exception.actionNotAllowedException import ActionNotAllowedException
+
+
+class AccessValidator:
+
+    @staticmethod
+    def validate(user_id: str) -> None:
+        if user_id in BANNED_USERS:
+            raise ActionNotAllowedException('You are banned')