Allow xcrun to execute without any fault if iphone sdk is requested. Add all applecross library directories to ldconfig.

Update Dockerfile to build the iPhoneOS and iPhoneSimulator SDK cctools-port so they have their own toolchain.

Update checksums of the iPhone SDKs.

Update the iPhone SDKs to put C++ headers in the proper expected place.

Add cbindgen to the container, it is often used in cases that cross-compilation is needed, so might as well put it in.

Add support for macOS ARM builds.

No longer track zip files for Git LFS.

Change to download the Android SDK from Google instead of from the GitHub repo.

Reconfigure the builds to download dependencies from GitHub rather than COPY from the Docker daemon context, and clean them up in one layer. This reduces image size. Also add SHA256 checksum to ensure downloads are not corrupt.

Add Android support to container.

Adding Android NDK to repository.

Refactor iOS and macOS build env setup. Add a Makefile to build and push images.

Add the iPhone Simulator SDK for simulator x86_64 builds.

Update iPhoneOS SDK to be properly rooted in the tarball.

Add the iPhoneOS ARM SDK to the repository.