Add in the loop test for navigable pages, plus test workflow

test-e2e/all-site-layout-pages-navigable.spec.ts

@@ -0,0 +1,11 @@
+import {test, expect} from '@playwright/test';
+
+import {getPaths} from "@data/site-layout.ts";
+
+
+for (const pagePath of getPaths()) {
+    test(`${pagePath} Navigable`, async ({page}) => {
+        const response = await page.request.get(pagePath);
+        await expect(response).toBeOK();
+    });
+}