HTTP request from inside WASM in Dart - list of demos

1. Demo using package:dio
2. Demo using package:fetch_api
3. Demo using package:fetch_client
4. Demo using package:http
5. Demo using package:requests
6. Demo using package:web and fetch()
7. Demo using raw fetch() via js_interop_unsafe
8. Demo using raw fetch() via js_interop and extension type