Fix invalid chars in Literal value

Author: bogdandm

json_to_models/dynamic_typing/complex.py

@@ -265,7 +265,10 @@ def to_typing_code(self, types_style: Dict[Union['BaseType', Type['BaseType']],
         if options.get(self.TypeStyle.use_literals):
             limit = options.get(self.TypeStyle.max_literals)
             if limit is None or len(self.literals) < limit:
-                parts = ', '.join(f'"{s}"' for s in sorted(self.literals))
+                parts = ', '.join(
+                    '"{}"'.format(s.replace('\\', '\\\\').replace('"', '\\"'))
+                    for s in sorted(self.literals)
+                )
                 return [(Literal.__module__, 'Literal')], f"Literal[{parts}]"
 
         return [], 'str'

test/test_cli/data/file.ini

@@ -6,4 +6,4 @@ organization = Acme Widgets Inc.
 ; use IP address in case network name resolution is not working
 server = 192.0.2.62
 port = 143
-file = payroll.dat
+file = "payroll.dat"