Degencast🎩

- Add createNft method,  can directly add nft assets
- It is difficult to add $CAST liquidity based on the existing implementation. One solution is to establish $DEGEN/$CAST, $CAST/$ChannelToken liquidity, but the changes are very large

Have you considered creating a separate liquidity pool for $CAST to address the challenges with adding liquidity? This could simplify the process and improve efficiency.