[OpenAI] Add JS config to tspconfig.yaml (#24383)

Co-authored-by: Mike Harder <[email protected]>

Author: deyaaeldeen

specification/cognitiveservices/OpenAI.Inference/tspconfig.yaml

@@ -20,3 +20,10 @@ options:
     partial-update: true
     enable-sync-stack: true
     generate-tests: false
+  "@azure-tools/typespec-ts":
+    emitter-output-dir: "{project-root}/generated"
+    generateMetadata: false
+    generateTest: false
+    isModularLibrary: true
+    packageDetails:
+      name: "@azure/openai"