[glass] Upgrade imgui to 0.85, implot to HEAD, glfw to 3.3.5 (#3754)

This in particular upgrades the plot widget with a few new features
and makes more plot configuration persistent.

shared/config.gradle

@@ -13,7 +13,7 @@ nativeUtils {
             niLibVersion = "2022.2.3"
             opencvVersion = "4.5.2-1"
             googleTestVersion = "1.9.0-5-437e100-1"
-            imguiVersion = "1.82-1"
+            imguiVersion = "1.85-2"
             wpimathVersion = "-1"
         }
     }