Set canvas icons on some native plugins

source/backend/plugin/NativePlugin.cpp

@@ -2202,6 +2202,29 @@ public:
             return false;
         }
 
+        // ---------------------------------------------------------------
+        // set icon
+
+        if (std::strcmp(fDescriptor->label, "audiofile") == 0)
+            fIconName = "file";
+        else if (std::strcmp(fDescriptor->label, "midifile") == 0)
+            fIconName = "file";
+        else if (std::strcmp(fDescriptor->label, "sunvoxfile") == 0)
+            fIconName = "file";
+
+        else if (std::strcmp(fDescriptor->label, "3BandEQ") == 0)
+            fIconName = "distrho";
+        else if (std::strcmp(fDescriptor->label, "3BandSplitter") == 0)
+            fIconName = "distrho";
+        else if (std::strcmp(fDescriptor->label, "Nekobi") == 0)
+            fIconName = "distrho";
+        else if (std::strcmp(fDescriptor->label, "Notes") == 0)
+            fIconName = "distrho";
+        else if (std::strcmp(fDescriptor->label, "PingPongPan") == 0)
+            fIconName = "distrho";
+        else if (std::strcmp(fDescriptor->label, "StereoEnhancer") == 0)
+            fIconName = "distrho";
+
         // ---------------------------------------------------------------
         // get info