NTRNL-450 - Add auth middleware

src/config/index.ts

@@ -14,10 +14,14 @@ export const SERVICE_NAME = 'Node Prototype';
 export const LANDING_PAGE = 'info';
 export const NOT_FOUND = 'page-not-found';
 export const ERROR_PAGE = 'error';
+export const NOT_AVAILABLE = 'not-available';
 
 // Routing paths
 export const LANDING_URL = '/info';
 
 export const INFO_URL = '/info';
 export const HEALTHCHECK_URL = '/healthcheck';
 export const SERVICE_URL = `${BASE_URL}${LANDING_URL}`;
+
+// Feature Flags
+export const FEATURE_FLAG_ENABLE_AUTH = getEnvironmentValue('FEATURE_FLAG_ENABLE_AUTH', 'false');