fix(core): fix types resolution for ESM bundlers

Author: dwightjack

.changeset/thin-otters-reflect.md

@@ -0,0 +1,5 @@
+---
+'vue-types': patch
+---
+
+vue-types: expose shared types to ESM module consumers

packages/core/package.json

@@ -22,6 +22,9 @@
       "require": "./dist/vue-types.cjs",
       "import": "./dist/vue-types.modern.js"
     },
+    "./dist/types": {
+      "types": "./dist/types.d.ts"
+    },
     "./shim": {
       "types": "./dist/shim.d.ts",
       "require": "./shim/index.cjs.js",