WiX: package _InternalSwiftStaticMirror on Windows

Include the static mirror library as part of the debugging tools. This
library is useful for building diagnostics tooling and is not currently
used in the core toolchain for building code or performing CI tasks.

Author: compnerd

platforms/Windows/dbg/dbg.wxs

@@ -12,6 +12,10 @@
     <WixVariable Id="SideBySidePackageUpgradeCode" Value="$(DbgUpgradeCode)" />
     <FeatureGroupRef Id="SideBySideUpgradeStrategy" />
 
+    <DirectoryRef Id="_usr_include">
+      <Directory Id="_usr_include__InternalSwiftStaticMirror" Name="_InternalSwiftStaticMirror" />
+    </DirectoryRef>
+
     <DirectoryRef Id="_usr_lib">
       <Directory Name="site-packages">
         <Directory Id="_usr_lib_site_packages_lldb" Name="lldb">
@@ -111,13 +115,35 @@
       <?endif?>
     </ComponentGroup>
 
+    <ComponentGroup Id="_InternalSwiftStaticMirror" Directory="_usr_include__InternalSwiftStaticMirror">
+      <Component Directory="_usr_bin">
+        <File Source="$(TOOLCHAIN_ROOT)\usr\bin\_InternalSwiftStaticMirror.dll" />
+      </Component>
+
+      <Component Directory="_usr_lib">
+        <File Source="$(TOOLCHAIN_ROOT)\usr\lib\swift\windows\_InternalSwiftStaticMirror.lib" />
+      </Component>
+
+      <Component>
+        <File Source="$(TOOLCHAIN_ROOT)\usr\lib\swift\_InternalSwiftStaticMirror\BinaryScan.h" />
+      </Component>
+      <Component>
+        <File Source="$(TOOLCHAIN_ROOT)\usr\lib\swift\_InternalSwiftStaticMirror\module.modulemap" />
+      </Component>
+      <Component>
+        <File Source="$(TOOLCHAIN_ROOT)\usr\lib\swift\_InternalSwiftStaticMirror\StaticMirrorMacros.h" />
+      </Component>
+    </ComponentGroup>
+
     <Feature Id="DebuggingTools" AllowAbsent="no" Title="!(loc.Dbg_ProductName)">
       <ComponentGroupRef Id="lldb" />
       <ComponentGroupRef Id="lldb_server" />
 
       <ComponentGroupRef Id="swift_repl" />
       <ComponentGroupRef Id="swift_inspect" />
 
+      <ComponentGroupRef Id="_InternalSwiftStaticMirror" />
+
       <ComponentGroupRef Id="VersionedDirectoryCleanup" />
     </Feature>
   </Package>