feat(CustomizationService):Add a customization service (#2984)

* feat(customization):Add a customization service

Update UICustomizationService to v3-stable.

Also, adds an example customization for tab colors

* moved the customization service to ui category

platform/viewer/src/routes/index.tsx

@@ -10,7 +10,6 @@ import NotFound from './NotFound';
 import buildModeRoutes from './buildModeRoutes';
 import PrivateRoute from './PrivateRoute';
 
-// TODO: Make these configurable
 // TODO: Include "routes" debug route if dev build
 const bakedInRoutes = [
   // WORK LIST
@@ -24,10 +23,11 @@ const bakedInRoutes = [
     path: '/local',
     children: Local,
   },
-  // NOT FOUND (404)
-  { component: NotFound },
 ];
 
+// NOT FOUND (404)
+const notFoundRoute = { component: NotFound };
+
 const createRoutes = ({
   modes,
   dataSources,
@@ -47,7 +47,17 @@ const createRoutes = ({
       hotkeysManager,
     }) || [];
 
-  const allRoutes = [...routes, ...bakedInRoutes];
+  const { customizationService } = servicesManager.services;
+
+  const customRoutes = customizationService.getGlobalCustomization(
+    'customRoutes'
+  );
+  const allRoutes = [
+    ...routes,
+    ...(customRoutes?.routes || []),
+    ...bakedInRoutes,
+    customRoutes?.notFoundRoute || notFoundRoute,
+  ];
 
   function RouteWithErrorBoundary({ route, ...rest }) {
     // eslint-disable-next-line react/jsx-props-no-spreading