Added new parameters to model input.

New parameters have been added to define the input of the models:
* ResizeOperation: by default center-crop was being performed, now it is
  configurable.
* InputOrder: by default RGB was being used as the order for the array
  values of the input tensor, now it can be configured.
* InputInterval has been changed to InputIntervals (an slice). This
  means that every channel can have its own interval conversion.
* InputInterval can define now stddev and mean, because sometimes
  instead of adjusting the interval, the stddev and mean of the training
data should be use.

internal/ai/classify/model_external_test.go

@@ -68,9 +68,11 @@ var modelsInfo = map[string]*tensorflow.ModelInfo{
 	},
 	"vision-transformer-tensorflow2-vit-b16-classification-v1.tar.gz": {
 		Input: &tensorflow.PhotoInput{
-			Interval: &tensorflow.Interval{
-				Start: -1.0,
-				End:   1.0,
+			Intervals: []tensorflow.Interval{
+				{
+					Start: -1.0,
+					End:   1.0,
+				},
 			},
 		},
 		Output: &tensorflow.ModelOutput{