[clang-tools-extra] [clangd] Add feature modules registry (PR #153756)

[Aleksandr Platonov via cfe-commits]

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@@ -172,6 +178,9 @@ class FeatureModuleSet {
   const_iterator begin() const { return const_iterator(Modules.begin()); }
   const_iterator end() const { return const_iterator(Modules.end()); }
 
+  void add(std::unique_ptr<FeatureModule> M) {
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ArcsinX wrote:

Moved

https://github.com/llvm/llvm-project/pull/153756