[Co-Simulation] Fix import sumo_integration module (#3988)

* fix import sumo_integration module

Fixed vtypes file path to allow importing the sumo_integration module

* CHANGELOG updated

Co-authored-by: Axel1092 <35765780+Axel1092@users.noreply.github.com>
Co-authored-by: bernat <bernatx@gmail.com>

CHANGELOG.md

@@ -1,5 +1,6 @@
 ## Latest
 
+  * Fixed import sumo_integration module from other scripts
   * Fixed bug causing the RoadOptions at the BehaviorAgent to not work as intended
   * Upgrading to Unreal Engine 4.26
   * Added Lincoln 2020 vehicle dimensions for CarSim integration

Co-Simulation/Sumo/sumo_integration/bridge_helper.py

@@ -14,6 +14,7 @@
 import json
 import logging
 import math
+import os
 import random
 
 import carla  # pylint: disable=import-error
@@ -34,7 +35,9 @@ class BridgeHelper(object):
     blueprint_library = []
     offset = (0, 0)
 
-    with open('data/vtypes.json') as f:
+    _vtypes_path = os.path.join(os.path.dirname(os.path.realpath(__file__)), "..", "data",
+                                "vtypes.json")
+    with open(_vtypes_path) as f:
         _VTYPES = json.load(f)['carla_blueprints']
 
     @staticmethod