[clang] [clang-tools-extra] [clangd] Update clangDaemonTweaks to set symbol visibility macros (PR #112304)

[Saleem Abdulrasool via cfe-commits]

================
@@ -47,7 +47,7 @@ endmacro()
 
 macro(add_clang_library name)
   cmake_parse_arguments(ARG
-    "SHARED;STATIC;INSTALL_WITH_TOOLCHAIN"
+    "SHARED;STATIC;INSTALL_WITH_TOOLCHAIN;CLANG_IMPORT"
----------------
compnerd wrote:

It is unclear what this new option (`CLANG_IMPORT`) does.

https://github.com/llvm/llvm-project/pull/112304