Changes to Create an image build

added the new optional request property contextManifest

added the new optional request property dockerImageManifest

added the new optional request property dockerfilePath

added the new optional request property enableGPUBuilds

added the new docker_image_manifest_v1 enum value to the request property inputFormat

added the new dockerfile_context_manifest_v1 enum value to the request property inputFormat

added the new dockerfile_context_tar_gz enum value to the request property inputFormat

added the optional property build/enableGPUBuilds to the response with the 200 status

added the optional property build/gpuImageReady to the response with the 200 status

added the optional property build/gpuUploaded to the response with the 200 status

added the optional property build/imageReady to the response with the 200 status

added the optional property build/uploaded to the response with the 200 status

endpoint added