Request - update to TNN 0.3 + support face landmarks model in samples

[ofirkris]

Hello thanks for sharing these samples - can you also add the other model cards of landmarks and hair segmentation?

[cmdbug]

https://github.com/Tencent/TNN/releases
Download and replace with the above address. The model can go to the official website to see the provided examples and try to figure it out by yourself.