Blender GPU / CPU Render (#81)

* Add script to get GPU information from Blender

* Change run_python_script to allow it to run without a project file

* Simplify run_python_script code

* Fix mistake

* Add system_info to engine classes and api_server. /api/renderer_info now supports standard and full response modes.

* Get full renderer_info response for add job UI

* Enable setting specific Blender render_device using args

* Add Blender render device options to UI

src/engines/core/base_engine.py

@@ -69,8 +69,10 @@ class BaseRenderEngine(object):
     def get_output_formats(cls):
         raise NotImplementedError(f"get_output_formats not implemented for {cls.__name__}")
 
-    @classmethod
-    def get_arguments(cls):
+    def get_arguments(self):
+        pass
+
+    def system_info(self):
         pass
 
     def perform_presubmission_tasks(self, project_path):