Rollup merge of #152768 - ZuseZ4:autodiff-in-ci-for-all-os, r=Kobzol

Enable autodiff in ci for all major os

*[View all comments](https://triagebot.infra.rust-lang.org/gh-comments/rust-lang/rust/pull/152768)*

Follow-up attempt to rust-lang/rust#140064 after moving autodiff to dlopen.
It covers Linux (x86_64+aarch64), MacOS (aarch64), Windows (mingw-llvm aarch64+x86_64)
The extra build time for Enzyme are 180.27s on our slowest runner (aarch64-apple).

The follow-up distribution via rustup probably still needs a small fix, see rust-lang/rust#151063 (comment)

Placing the downloaded libEnzyme artifact on my local linux under `~/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib` enables my nightly compiler to run autodiff.

r? @Kobzol

closes: rust-lang/rust#140064
closes: rust-lang/rust#151243
closes: rust-lang/rust#151063

Author: JonathanBrouwer