to enable https://reviews.llvm.org/D116317

Since the introduction of "ColumnLimit: 120" in .clang-format, the
column limit has become 120 characters instead of 80 characters.

This prevents clang-format from generating too much changes even if just
a small portion of a source file or header file is modified.

to make indexers stop in time. This is especially relevant when there
are many initial index requests.

Build llvm-project
```
ninja -C out/stable clang clangFormat clangIndex clangTooling
```

Then build ccls against the just-built llvm-project.
```
cmake -S. -Bout/debug -G Ninja -DCMAKE_BUILD_TYPE=Debug -DCMAKE_CXX_COMPILER=$HOME/Stable/bin/clang++ -DCMAKE_EXPORT_COMPILE_COMMANDS=On -DCMAKE_PREFIX_PATH="$HOME/llvm/out/stable;$HOME/llvm/out/stable/tools/clang" -DCLANG_EXECUTABLE=$HOME/Stable/bin/clang++
```

Finally, run `ccls -test-index`

To specify arguments that are inserted immediately after the compiler
driver name. For example, initialization options
`{"clang":{"prependArgs":["--gcc-install-dir=/usr/lib/gcc/x86_64-linux-gnu/13"]}}`
transforms `clang -c a.cc` into `clang --gcc-install-dir=/usr/lib/gcc/x86_64-linux-gnu/13 -c a.cc`.
This allows users to provide default arguments that can be overridden as
needed.

Fix indexer.cc:802 "Unhandled 72" when compiling `#include <chrono>`
functions with -std=c++20.

The struct derived from an alias is missing from type hierarchy before this fix:
```cpp
struct Base {};
struct Derived : Base {};
using BaseAlias = Base;
struct DerivedAlias : BaseAlias {};
```
```
Derive from
Base
└╸Derived
```
The expected output is:
```
Derive from
Base
├╸Derived
└╸DerivedAlias
```

Type::Elaborated is removed by llvmorg-22-init-3166-g91cdd35008e9

llvm::sys::fs and clang functions are changed due to
https://discourse.llvm.org/t/rfc-file-system-sandboxing-in-clang-llvm/88791