add Swagger UI endpoint and add to router

src/routes/routes.ts

@@ -71,7 +71,7 @@ import etapiSpecialNoteRoutes from "../etapi/special_notes.js";
 import etapiSpecRoute from "../etapi/spec.js";
 import etapiBackupRoute from "../etapi/backup.js";
 
-
+import apiDocsRoute from "./api_docs.js";
 
 const MAX_ALLOWED_FILE_SIZE_MB = 250;
 const GET = "get",
@@ -369,6 +369,9 @@ function register(app: express.Application) {
     etapiSpecRoute.register(router);
     etapiBackupRoute.register(router);
 
+    // API Documentation
+    apiDocsRoute.register(app);
+
     app.use("", router);
 }