fix: actually export esm package

package.json

@@ -1,8 +1,9 @@
 {
     "type": "module",
     "name": "revolt.js",
-    "version": "6.0.0-rc.14",
+    "version": "6.0.0-rc.15",
     "main": "dist/index.js",
+    "module": "esm/index.js",
     "repository": "https://github.com/revoltchat/revolt.js",
     "author": "Paul Makles <insrt.uk>",
     "license": "MIT",
@@ -81,7 +82,8 @@
     },
     "files": [
         "README.md",
-        "dist"
+        "dist",
+        "esm"
     ],
     "description": "Library for interacting with the Revolt API."
 }