LDC 1.24.0

[kinke]

Glad to announce LDC 1.24 - some highlights:

- Based on D 2.094.1+.
- Support for LLVM 11. The prebuilt packages use v11.0.0, and the 
x86 packages newly include the LLVM backend for AMD GPUs.
- Experimental support for targeting macOS on 64-bit ARM. The 
macOS package includes prebuilt druntime/Phobos libraries for 
cross-compilation via `-mtriple=arm64-apple-macos`.

Full release log and downloads: 
https://github.com/ldc-developers/ldc/releases/tag/v1.24.0

Thanks to all contributors & sponsors!