[ModelicaSystem] move import re

Pylint is recommenting to order the imports in several sections alphabetically:
(1) python standard library
(2) third party packages
(3) current package

Author: syntron

OMPython/ModelicaSystem.py

@@ -11,6 +11,7 @@
 import os
 import pathlib
 import queue
+import re
 import textwrap
 import threading
 from typing import Any, cast, Optional
@@ -19,8 +20,6 @@
 
 import numpy as np
 
-import re
-
 from OMPython.OMCSession import (
     OMCSessionException,
     OMCSessionRunData,