[SysApps] Hook the AVCodecProvider into SysAppsManager

The platform specific implementation of AVCodecsProvider[Windows|Tizen|Linux|Android]
has been inherited from the AVCodecsProvider. So, this will allow us to initialize
the platform specific instance of the provider.
[SysApps] Add browsertests for DeviceCapabilities getAVCodecs()
[SysApps] Add AVCodecsProvider unit tests
[SysApps] Add unit test for the GetAVCodecsProvider()