Support video scaling for video recording

Support video scaling for video recording

- This feature is just for the target which does not support dual stream recording.

- Add "UseVideoscale" and "VideoscaleElement" like below in mmfw_camcorder.ini file to enable this feature.
[Record]
...
UseVideoscale = 1
VideoscaleElement = videoscale | 1,0 | method,1

- It will be disabled when video resolution is bigger than preview resolution although "UseVideoscale" is 1.

[Version] 0.10.211
[Issue Type] New feature

Change-Id: Ia7ea1740da8dbf934c9e574261e26fa460f33e61
Signed-off-by: Jeongmo Yang <jm80.yang@samsung.com>