[clang-tools-extra] [clangd] Support symbolTags for document symbol (PR #113669)

[Dietrich Travkin via cfe-commits]

travkin79 wrote:

Hi @chouzz,
I think, I have a first clangd LSP client prototype that I could start using for testing your modified clangd prototype. I guess, I have to build your fork on my machine, right?

It seems, there is one failing test in the CI pipeline. Could you try fixing it?

```
Failed Tests (1):
--
  | Clangd :: symbols.test
```


https://github.com/llvm/llvm-project/pull/113669