[clang] [InstallAPI] Set InstallAPI as a standalone tool instead of CC1 action (PR #82293)

[Juergen Ributzka via cfe-commits]

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@@ -0,0 +1,106 @@
+#include "Options.h"
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ributzka wrote:

Please add the license/file header.

https://github.com/llvm/llvm-project/pull/82293