Optimize pipeline for fatal/non-retriable errors

[dluc]

• In case of fatal non retriable errors, stop retrying and immediately move queue msgs to poison queue.
• New KernelMemoryException.IsTransient optional property to explicit if an error is transient or not.
• Use KernelMemoryException.IsTransient in Azure AI Doc Intelligence when an image cannot be processed, for instance when the image is too big (note: max size depends on SKU, see service public docs).
• Use KernelMemoryException.IsTransient in AI clients, don't retry if the HTTP error cannot be recovered without code/config changes
• Use KernelMemoryException.IsTransient in AI Mime type detection, don't retry processing unsupported files.
• Change IQueue and IPipelineStepHandler signatures to support failure types, as opposed to just a boolean false.