LCM Inpaint Diffuser

[saddam213]

PR to implement Inpaint for LCM

It will use the InpaintLegacy process as it does not have a specific Inpiant model

• Create Diffuser based on Image2Image
• Create Mask image
• Add noise to Mask after Step has run

In theory it should be

var noiseLatentTensor = scheduler.AddNoise(imageLatents, noise, timestep);
latents = (1f - maskTensor) * noiseLatentTensor + (maskTensor * latents)

[Amin456789]

nice!!!