v1.18.0
Enforce ispc package name in CI to make it work for release as well
Add workflow to check docs build
Add code formatting checking to Github Actions
Add testing with LLVM 14, change testing with LLVM 12 from full to sanity
SDE version 8.69.1 -> 9.0.0
Use LLVM 13.0.1 instead of 13.0.0 in CI
Rename nightly-14 to nightly-15 and change it to use 15.0
LLVM 11 & 12 build to keep using VS2019
Rebuild LLVM 13 to use VS2022
Remove build dir to get more space on Windows when rebuilding LLVM 14.0