Failure to link against thin archive .a libraries (libyuv, libboringssl) on MacOS 13

[philippewarren]

To circumvent the issue, we introduced a patch in CMake that finds all the object files referenced by these libraries using a simple glob on a folder, and then links against all these object files instead of going through the .a library file.

A change will be needed when GitHub Runners drop the x86_64 architecture to switch to arm64 (for MacOS 14), as this case is not supported by the build system of opentera-webrtc and our webrtc_native build. This might fix this issue as a side effet. If it does not, it will provide an opportunity to try to fix this bug in a better way than the current patch.