[webrtc] Add new category and items

[webrtc] Add new category and items

'resource acquisition' category is added.

New items are updated as below.
 - 'video encoded format support' is added to categories for media source.
 - 'audio sink element' and 'video sink element' are added to [rendering sink].
 - 'camera', 'video encoder', 'video decoder' and 'video overlay' are added to
   [resource acquisition]

[Version] 0.3.6
[Issue Type] Add

Change-Id: I2ef6b72d9d6af8ff8c39dfae1ea1695a598946a4
Signed-off-by: Sangchul Lee <sc11.lee@samsung.com>