Add Yotta Labs as a new provider

[liuwei-netizen]

Hi, I'm from Yotta Labs, a GPU cloud provider.

We would like to be added to gpuhunt. Here's our info:

• GPU types: RTX 5090,H100, A100, A6000, PRO 6000,B200,B300 etc.
• Regions: US, EU
• API: We have a public API at https://docs.yottalabs.ai/yotta-labs
• Spot instances: No

I'm willing to implement and maintain the provider.
Would you be open to accepting this contribution?