feat(inquiries): add sidebar nav item, icon, and API endpoint

- Add "Inquiries" nav item to sidebar data with `/inquiries` URL and BriefcaseTimer icon
- Implement BriefcaseTimer SVG icon component
- Add `INQUIRIES` base endpoint to API_ENDPOINTS
- Cleanup: remove commented details button in CmsTable, reorder imports

src/lib/api/endpoints.ts

@@ -64,4 +64,8 @@ export const API_ENDPOINTS = {
   CONTACT_US: {
     BASE: (id?: string) => (id ? `contacts/${id}` : "contacts"),
   },
+
+  INQUIRIES: {
+    BASE: (id?: string) => (id ? `inquiries/${id}` : "inquiries"),    
+  }
 } as const;