feat(js): setup changesets (#6006)

* feat(js): publish the client

* add the changeset

* cleanup

js/.changeset/eleven-bananas-visit.md

@@ -0,0 +1,5 @@
+---
+"@arizeai/phoenix-client": patch
+---
+
+pre-release of phoenix-client

js/packages/phoenix-client/README.md

@@ -1,6 +1,6 @@
 # @arizeai/phoenix-client
 
-This package provides a client for the Phoenix API.
+This package provides a client for the Phoenix API. It is still under active development and is subject to change.
 
 It utilizes [openapi-ts](https://openapi-ts.pages.dev/) to generate the types from the Phoenix OpenAPI spec.
 
@@ -21,11 +21,11 @@ The following environment variables are used:
 - `PHOENIX_CLIENT_HEADERS` - Custom headers to add to all requests. A JSON stringified object.
 
 ```bash
-PHOENIX_HOST=http://localhost:8000 PHOENIX_CLIENT_HEADERS='{"X-Custom-Header": "123"}' pnpx tsx examples/list_datasets.ts
+PHOENIX_HOST=http://localhost:6006 PHOENIX_CLIENT_HEADERS='{"Authorization": "bearer xxxxxx"}' pnpx tsx examples/list_datasets.ts
 # emits the following request:
-# GET http://localhost:8000/v1/datasets
+# GET http://localhost:6006/v1/datasets
 # headers: {
-#   "X-Custom-Header": "123",
+#   "Authorization": "bearer xxxxxx",
 # }
 ```
 
@@ -34,9 +34,9 @@ Alternatively, you can pass configuration options to the client directly, and th
 ```ts
 const phoenix = createClient({
   options: {
-    baseUrl: "http://localhost:8000",
+    baseUrl: "http://localhost:6006",
     headers: {
-      "X-Custom-Header": "123",
+      Authorization: "bearer xxxxxx",
     },
   },
 });