Contribute images to the AI denoiser

Ansel ships a neural raw denoiser (the rawdenoiseai module) that is unlike general-purpose AI denoisers: it is trained on non-demosaiced sensor data, as close to the actual sensor reading as a raw file allows , and it runs at the exact same point of the pipeline — before white balance, chromatic-aberration correction and demosaicing — so every downstream stage inherits clean data. One set of…