Add libyuv to third party component

[riza]

We recommend libyuv which provides video scaling and conversion method.
However, currently we only support libyuv as a stand alone project, with these drawbacks:

• Following the recommended steps to build the library, it is required to also download chromium project which is large in size (approximately 10GB).
• Changes on the libyuv project might break the existing build configuration.

This ticket will add libyuv to the third party folder, use a specific version and include only the necessary source.