LDC 1.36.0-beta1

[kinke]

Glad to announce the first beta for LDC 1.36. Major changes:

* Based on D 2.106.0.
* Support for LLVM 17; the prebuilt packages use v17.0.6.
* New GDC-compatible CLI options 
`-fno-{exceptions,moduleinfo,rtti}` to selectively enable some 
`-betterC` effects.
* Support for sample-based PGO via clang-compatible CLI option 
`-fprofile-sample-use` and `ldc-profgen` tool.

Full release log and downloads: 
https://github.com/ldc-developers/ldc/releases/tag/v1.36.0-beta1

Please give this some extra regression testing if you find the 
time, as it's the first LDC version with enforced opaque IR 
pointers, and there might still be related, hard-to-find bugs 
lurking in our codebase. You can e.g. run *optimized* unittests 
via `DFLAGS=-O dub run -c unittest -b unittest`.

So please help test, and thanks to all contributors & sponsors!