Create patch for webots_ros to launch Webots from correct directory o…

…n MacOS (#455)

* Add launch path patch for webots launcher script

* Rename ros-noetic-webots-ros.osx_arm64.patch to ros-noetic-webots-ros.osx.patch

---------

Co-authored-by: Tobias Fischer <info@tobiasfischer.info>

patch/ros-noetic-webots-ros.osx.patch

@@ -0,0 +1,13 @@
+diff --git a/scripts/webots_launcher.py b/scripts/webots_launcher.py
+index f20a0ac..c2983a2 100755
+--- a/scripts/webots_launcher.py
++++ b/scripts/webots_launcher.py
+@@ -64,7 +64,7 @@ options, args = optParser.parse_args()
+ if 'WEBOTS_HOME' not in os.environ:
+     sys.exit('WEBOTS_HOME environment variable not defined.')
+
+-command = [os.path.join(os.environ['WEBOTS_HOME'], 'webots'), '--mode=' + options.mode, options.world]
++command = [os.path.join(os.environ['WEBOTS_HOME'], 'Contents/MacOS/webots'), '--mode=' + options.mode, options.world]
+
+ if options.stream.lower() != 'false':
+     if options.stream.lower() == 'true':