Create a new LatentDiffusionInferer compatible with ControlNet

[virginiafdez]

At the moment, using ControlNet does not allow to use the call or sample methods from the inferer.
Create a new LatentDiffusionInferer, ControlNetLatentDiffusionInferer, or modify existing methods with:

• call method incorporating passing of controlnet and conditioning image
• sample method that either takes care of the whole sampling in it (opposed to call super method from Diffusion Inferer) or modify ALSO the sample method of Diffusion Inferer to allow for passage of ControlNet and conditionings.