Publishing self-contained static executable (with bundled libclang.a) about rust-bindgen

[HadrienG2]

Another possible (complementary) strategy is to use the pre-built binaries provided by LLVM contributors for various hardware + OS combinations.

They contain way more than we need, but extracting the (self-contained) libclang.so from them is not terribly difficult. So it should be possible to have a scheduled CI job that periodically scans the LLVM releases, extracts the libclang, and attaches it to the bindgen github release.

Of course, given that people are easily scared by binaries for reasons I have never fully understood (unless you claim that you or anyone else actually understands everything that the LLVM source code does, there is no meaningful security difference between building LLVM from source and using a pre-built binary from my perspective), the use of binaries should be optional.