adjust __all__ packet imports to new module names

contributes to #3

src/Parser/__init__.py

@@ -2,7 +2,7 @@ from typing import List, Tuple
 import arpeggio
 from itertools import chain
 
-__all__ = ["jobshop1_parser", "jobshop2_parser"]
+__all__ = ["js1_style", "js2_style"]
 
 grammar = """
         # starting point for jobshop1 input file