Add Pionex Exchange Integration

I’d like to propose adding Pionex as a supported exchange on Gainium. One of its key advantages over major exchanges like Binance is its extremely low trading fees for spot operations — as low as 0.05%, making it one of the most cost-effective platforms for frequent bot trading.

Integrating Pionex would open the door for users to maximize profits, especially in high-frequency strategies like grid and DCA, where fees can significantly impact returns over time.

This addition would offer the community more flexibility, better cost-efficiency, and a broader choice of exchanges.