Remote VAE feedback

### Did you like the remote VAE solution?

Absolutely, it is amazing for us AMD users. Until they figure out whatever bug is causing super long vae decode/encodes with AMD cards.. This solution is perfect. Who knows if its even a bug, its been happening for quite a while now unfortunately.

### What can be improved about the current solution?

An official comfyui node would be cool to see, so it can be instantly updated for new vaes in the future (hopefully)

### What other VAEs you would like to see if the pilot goes well?

WAN would be awesome, videos are all the rage now and currently I have to used tiled vae or its impossible to do WAN videos with my AMD.

### Notify the members of the team

@hlky @sayakpaul Thanks for your hard work on this!

このissueでは、ファイル、テスト、エントリポイントが指定されていません。まず公式ComfyUIノードとWAN VAEサポートの範囲を明確にし、次に既存のRemote VAE実装とその更新経路を特定してください。完了条件には、合意済みの統合設計とAMDユーザー向けの検証を含める必要があります。

索引モデルが issue の本文から書いたものです。