layout change UI (#776)

* add layout to schema

* add layout choice action and reducer

* multi layout UI

* update unit tests

* add missing file

* update test schema

* fix duplicate test id

* fix tabs

* PR lint

* fix pytest

server/app/scanpy_engine/scanpy_engine.py

@@ -115,6 +115,7 @@ class ScanpyEngine(CXGDriver):
                 "type": str(self.data.X.dtype),
             },
             "annotations": {"obs": [], "var": []},
+            "layout": {"obs": []}
         }
         for ax in Axis:
             curr_axis = getattr(self.data, str(ax))
@@ -140,6 +141,14 @@ class ScanpyEngine(CXGDriver):
                     )
                 self.schema["annotations"][ax].append(ann_schema)
 
+        for layout in self.config['layout']:
+            layout_schema = {
+                "name": layout,
+                "type": "float32",
+                "dims": [f"{layout}_0", f"{layout}_1"]
+            }
+            self.schema["layout"]["obs"].append(layout_schema)
+
     def _load_data(self, data):
         # as of AnnData 0.6.19, backed mode performs initial load fast, but at the
         # cost of significantly slower access to X data.