[fela-dom] Add UMD bundle to NPM package (#805)

Author: jp7837

packages/fela-dom/package.json

@@ -13,7 +13,8 @@
     "LICENSE",
     "README.md",
     "lib/**",
-    "es/**"
+    "es/**",
+    "umd/**"
   ],
   "repository": "https://github.com/robinweser/fela/",
   "keywords": [