fix: Add extensions to relative exports in declaration files (#585)

Author: lachlancollins

package.json

@@ -34,7 +34,7 @@
   "namespace": "@tanstack",
   "devDependencies": {
     "@solidjs/testing-library": "^0.8.5",
-    "@tanstack/config": "^0.1.8",
+    "@tanstack/config": "^0.3.0",
     "@testing-library/jest-dom": "^6.1.5",
     "@testing-library/react": "^14.1.2",
     "@testing-library/user-event": "^14.4.3",