mv_machine_learning: drop the use of template type from itask

mv_machine_learning: drop the use of template type from itask

[Issue type] : code cleanup

Drop the use of template type from itask and its child classes.
Finally, we have broken the template jail by introducing common
input and output structures, InputBaseType and OutputBaseType.

This patch also includes some updates to the task groups which don't use
MachineLearningNative module yet.

Change-Id: I96abdd94dc715e3f24717e14ad92533c9451f861
Signed-off-by: Inki Dae <inki.dae@samsung.com>