Feature usage updates

Author: estruyf

src/common/appInsights/index.ts

@@ -4,10 +4,11 @@ import {Environment,EnvironmentType} from "@microsoft/sp-core-library";
 
 AppInsights.downloadAndSetup({ instrumentationKey: "9f59b81e-d2ed-411e-a961-8bcf3f7f04d0" });
 
-export function track(componentName: string): void {
+export function track(componentName: string, properties: any = {}): void {
   AppInsights.trackEvent(componentName, {
     version,
     debug: DEBUG ? "true" : "false",
-    environment: EnvironmentType[Environment.type]
+    environment: EnvironmentType[Environment.type],
+    ...properties
   });
 }