added global prelaunch hook for mac prepending open -an arguments

openpype/hooks/pre_mac_launch.py

@@ -0,0 +1,18 @@
+from openpype.lib import PreLaunchHook
+
+
+class LaunchWithTerminal(PreLaunchHook):
+    """Mac specific pre arguments for application.
+
+    Mac applications should be launched using "open" argument which is internal
+    callbacks to open executable. We also add argument "-an" to create new
+    process. This is used only for executables ending with ".app". It is
+    expected that these executables lead to app packages.
+    """
+    order = 1000
+
+    platforms = ["darwin"]
+
+    def execute(self):
+        if self.launch_context.executable.endswith(".app"):
+            self.launch_context.launch_args.insert(0, ["open", "-an"])