[backend][assetmodel] Add missing PlotterParameters type

beat/editor/backend/assetmodel.py

@@ -42,7 +42,8 @@ class AssetType:
     Experiment = 4
     Library = 5
     Plotter = 6
-    Toolchain = 7
+    PlotterParameters = 7
+    Toolchain = 8
 
     @classmethod
     def path(cls, type_):
@@ -59,6 +60,8 @@ class AssetType:
             path = "libraries"
         elif type_ == cls.Plotter:
             path = "plotters"
+        elif type_ == cls.PlotterParameters:
+            path = "plotterparameters"
         elif type_ == cls.Toolchain:
             path = "toolchains"