Remove Old Multi-Client Code / Refactoring (#13)

* Remove a lot of old code from render_queue regarding clients

* More code cleanup

* More code cleanup

* Move everything around

* Minor log change

lib/engines/aerender_engine.py

@@ -0,0 +1,26 @@
+try:
+    from .base_engine import *
+except ImportError:
+    from base_engine import *
+
+
+class AERender(BaseRenderEngine):
+
+    supported_extensions = ['.aep']
+
+    @classmethod
+    def version(cls):
+        version = None
+        try:
+            render_path = cls.renderer_path()
+            if render_path:
+                ver_out = subprocess.check_output([render_path, '-version'], timeout=SUBPROCESS_TIMEOUT)
+                version = ver_out.decode('utf-8').split(" ")[-1].strip()
+        except Exception as e:
+            logger.error(f'Failed to get {cls.name()} version: {e}')
+        return version
+
+    @classmethod
+    def get_output_formats(cls):
+        # todo: create implementation
+        return []