add index.esm.html

packages/artplayer/package.json

@@ -4,7 +4,13 @@
     "version": "5.2.3",
     "main": "dist/artplayer.js",
     "legacy": "dist/artplayer.legacy.js",
+    "module": "dist/artplayer.esm.js",
     "types": "types/artplayer.d.ts",
+    "exports": {
+        "import": "./dist/artplayer.esm.js",
+        "require": "./dist/artplayer.js",
+        "default": "./dist/artplayer.js"
+    },
     "homepage": "https://artplayer.org",
     "author": "Harvey Zack <laozhaochaguan@gmail.com>",
     "browserslist": "last 1 Chrome version",
@@ -24,4 +30,4 @@
     "dependencies": {
         "option-validator": "^2.0.6"
     }
-}
+}