[clang-tools-extra] [clangd] [C++20] [Modules] Support code complete for C++20 modules (PR #110083)

[kadir çetinkaya via cfe-commits]

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@@ -52,6 +52,9 @@ struct CodeCompleteOptions {
   /// For example, private members are usually inaccessible.
   bool IncludeIneligibleResults = false;
 
+  /// Whether the experimental modules support are enabled.
+  bool ExperimentalModulesSupport = false;
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kadircet wrote:

can you rename this to `ForceLoadPreamble`? with a comment explaining what it does

https://github.com/llvm/llvm-project/pull/110083