Make it easier to override display-test-app configuration. (#3400)

* Make it easier to override display-test-app configuration.

* clarify.

Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>

Author: pmconne

test-apps/display-test-app/src/frontend/DisplayTestApp.ts

@@ -16,6 +16,7 @@ import { showStatus } from "./Utils";
 import { Dock } from "./Window";
 
 const configuration: DtaConfiguration = {};
+
 const getFrontendConfig = () => {
   if (ProcessDetector.isMobileAppFrontend) {
     if (window) {
@@ -30,6 +31,19 @@ const getFrontendConfig = () => {
   }
 
   Object.assign(configuration, getConfig());
+
+  // Overriding the configuration generally requires setting environment variables, rebuilding the app, and restarting the app from scratch -
+  // and sometimes that doesn't even work.
+  // If you want to quickly adjust aspects of the configuration on the frontend, you can instead add your overrides below and just hot-reload the app in the browser/electron.
+  // Obviously, don't commit such changes.
+  const configurationOverrides: DtaConfiguration = {
+    /* For example:
+    iModelName: "d:\\bim\\Constructions.bim",
+    disableInstancing: true,
+    */
+  };
+  Object.assign(configuration, configurationOverrides);
+
   console.log("Configuration", JSON.stringify(configuration)); // eslint-disable-line no-console
 };