Add exports map with index, native, type_builder, errors, and browser (#2299)

Relates to #2298 

These are all the sub-paths that I can see that there are examples of
importing from:
https://github.com/search?q=repo%3ABoundaryML%2Fbaml+from+%27%40boundaryml%2Fbaml%2F&type=code&p=1
<!-- ELLIPSIS_HIDDEN -->

----

> [!IMPORTANT]
> Add exports map to `package.json` for specific entry points in
`engine/language_client_typescript`.
> 
>   - **Exports Map**:
> - Adds `exports` field in `package.json` to define entry points for
`./index.js`, `./native.js`, `./type_builder.js`, `./errors.js`, and
`./browser.js`.
> 
> <sup>This description was created by </sup>[<img alt="Ellipsis"
src="https://img.shields.io/badge/Ellipsis-blue?color=175173">](https://www.ellipsis.dev?ref=BoundaryML%2Fbaml&utm_source=github&utm_medium=referral)<sup>
for fc4c9e4. You can
[customize](https://app.ellipsis.dev/BoundaryML/settings/summaries) this
summary. It will automatically update as commits are pushed.</sup>

<!-- ELLIPSIS_HIDDEN -->

---------

Co-authored-by: aaronvg <aaron@boundaryml.com>
Co-authored-by: Antonio Sarosi <sarosiantonio@gmail.com>

Author: 3 people

engine/language_client_typescript/package.json

@@ -42,6 +42,14 @@
   ],
   "main": "./index.js",
   "types": "./index.d.ts",
+  "exports": {
+    ".": "./index.js",
+    "./native": "./native.js",
+    "./type_builder": "./type_builder.js",
+    "./errors": "./errors.js",
+    "./browser": "./browser.js",
+    "./logging": "./logging.js"
+  },
   "napi": {
     "binaryName": "baml",
     "targets": [

integ-tests/typescript-esm/main.ts

@@ -1,7 +1,13 @@
 import { b } from "./baml_client/index.js";
 // import { Image} from "@boundaryml/baml";
 import pkg from "@boundaryml/baml";
+// Force another import for the logging path.
+import  { setLogLevel } from "./baml_client/config.js";
+
 const { Image } = pkg;
+
+setLogLevel("info");
+
 const result = await b.DescribeImage( Image.fromUrl('https://upload.wikimedia.org/wikipedia/en/4/4d/Shrek_%28character%29.png'));
 
 console.log(result);