Fix circular dependency for app.routes.ts

Found with `npx fallow`.

Author: hlovdal

src/app/app.routes.constants.ts

@@ -10,3 +10,5 @@
 export const paramMapNameYear = "year" as const;
 export const paramMapNameFylke = "fylke" as const;
 export const paramMapNameKommune = "kommune" as const;
+
+export const yearSelectorRoutePath = "år";

src/app/app.routes.ts

@@ -11,13 +11,12 @@ import {
     paramMapNameFylke,
     paramMapNameKommune,
     paramMapNameYear,
+    yearSelectorRoutePath,
 } from "./app.routes.constants";
 import { KommuneComponent } from "./kommune/kommune/kommune.component";
 import { OppdateringComponent } from "./oppdatering/oppdatering.component";
 import { AboutComponent } from "./about/about.component";
 
-export const yearSelectorRoutePath = "år";
-
 export const routes: Routes = [
     { path: "", redirectTo: `/${currentYear}`, pathMatch: "full" },
     { path: yearSelectorRoutePath, component: YearSelectorComponent },

src/app/menu.service.ts

@@ -10,7 +10,7 @@ import {
 } from "rxjs";
 import { takeUntilDestroyed } from "@angular/core/rxjs-interop";
 
-import { yearSelectorRoutePath } from "./app.routes";
+import { yearSelectorRoutePath } from "./app.routes.constants";
 
 export const MenuItemKeyObj = {
     YearSelector: "YearSelector",