feat: reduce size using minify and external

Author: Pyrax

packages/react-netlify-forms/package.json

@@ -27,8 +27,8 @@
     "node": ">=10"
   },
   "scripts": {
-    "build": "bun build ./src/index.js --outdir ./dist --target node",
-    "start": "bun build ./src/index.js --outdir ./dist --target node --watch"
+    "build": "bun build ./src/index.js --outdir ./dist --minify --sourcemap=linked --external react",
+    "start": "bun build ./src/index.js --outdir ./dist --watch"
   },
   "peerDependencies": {
     "react": "^16.8.0 || ^17.0.2 || ^18.0.0 || ^19.0.0"