Update the folder titles for targets in the monorepository that have not
seen taken care of for some time. These are the folders that targets are
organized in Visual Studio and XCode
(`set_property(TARGET <target> PROPERTY FOLDER "<title>")`)
when using the respective CMake's IDE generator.
* Ensure that every target is in a folder
* Use a folder hierarchy with each LLVM subproject as a top-level folder
* Use consistent folder names between subprojects
* When using target-creating functions from AddLLVM.cmake, automatically
deduce the folder. This reduces the number of
`set_property`/`set_target_property`, but are still necessary when
`add_custom_target`, `add_executable`, `add_library`, etc. are used. A
LLVM_SUBPROJECT_TITLE definition is used for that in each subproject's
root CMakeLists.txt.
This makes the LLDB fuzzers write their fuzzer artifacts to
their own directory in the build directory. It also adds an artifact
prefix to the target fuzzer to make it easier to tell which fuzzer
wrote the artifact.
Differential revision: https://reviews.llvm.org/D128450
Create a ninja target for running the LLDB target fuzzer.
Currently the ninja target for the fuzzer will build the fuzzer without
running it. This allows the fuzzer to be built and run.
Differential revision: https://reviews.llvm.org/D127882
