This adds support for some "new" Java language features such as switch expressions.

I noticed that the new release would reformat quite a bit of existing code. Most of the changes were just breaking string literals apart. So I adjusted our clang-format template as well to add the rule that string literals should be kept. I also think this makes sense in general as strings can easier be searched for in the project.

Some notes on the binaries:

• For Windows, I took the one provided by LLVM on their release page.
• For macOS, it's still self-built on and for the amd64 architecture. But as far as I know, this should still run fine on more modern machines with an ARM processor.
• For macOS and Linux, I adjusted the build a little in order to reduce the amount of dependencies (dynamically loaded libraries). More dependencies are only increasing the likeliness of a breakage at some point. Namely, I added these CMake options: -DLLVM_ENABLE_ZLIB=OFF -DLLVM_ENABLE_ZSTD=OFF -DLLVM_ENABLE_THREADS=OFF. Especially the zlib and zstd options were not available in previous releases (as far as I know).
• For Linux, the binary was built within a current Ubuntu 24.04 environment with a minimal patch (see below). This allows the binary to run on Alpine Linux (my distribution of choice) with the gcompat package as well.

This is the patch that I applied for the Linux build:

diff --git a/llvm/cmake/config-ix.cmake b/llvm/cmake/config-ix.cmake
index ed2bfa6df68f..ed2d1328db31 100644
--- a/llvm/cmake/config-ix.cmake
+++ b/llvm/cmake/config-ix.cmake
@@ -342,6 +342,7 @@ endif()
 
 # function checks
 check_symbol_exists(arc4random "stdlib.h" HAVE_DECL_ARC4RANDOM)
+set(HAVE_DECL_ARC4RANDOM FALSE)
 find_package(Backtrace)
 set(HAVE_BACKTRACE ${Backtrace_FOUND})
 set(BACKTRACE_HEADER ${Backtrace_HEADER})