fix(types): add client and theme to `exports` field (#914)

Co-authored-by: Divyansh Singh <40380293+brc-dd@users.noreply.github.com>

client.d.ts

@@ -1,3 +1,5 @@
 // re-export vite client types. with strict installers like pnpm, user won't
 // be able to reference vite/client in project root.
 /// <reference types="vite/client" />
+
+export * from './dist/client'

package.json

@@ -12,7 +12,15 @@
       "import": "./dist/node/index.js",
       "require": "./dist/node-cjs/index.cjs"
     },
-    "./dist/client/*": "./dist/client/*"
+    "./dist/client/*": "./dist/client/*",
+    "./client": {
+      "types": "./client.d.ts",
+      "default": "./dist/client/index.js"
+    },
+    "./theme": {
+      "types": "./theme.d.ts",
+      "default": "./dist/client/theme-default/index.js"
+    }
   },
   "bin": {
     "vitepress": "bin/vitepress.js"