Add a mining mode to mine with both the GPU and the CPU

Add a mining mode to mine with both the GPU and the CPU. This can be helpful because it will make the mining process faster and more efficient.

This is a repost of an existing topic. Yours has been flagged.

It will be very helpful, if you could possibly add a feature, so I can mine with gpu, and cpu at the same time.
If anyone adds this feature ty.