WiX: package SwiftRefactor for sourcekit-lsp

Add the missing dependency for sourcekit-lsp as per
#280.

Author: compnerd

platforms/Windows/bld/bld.wxs

@@ -381,6 +381,9 @@
       <Component>
         <File Source="$(TOOLCHAIN_ROOT)\usr\bin\SwiftParserDiagnostics.dll" />
       </Component>
+      <Component>
+        <File Source="$(TOOLCHAIN_ROOT)\usr\bin\SwiftRefactor.dll" />
+      </Component>
       <Component>
         <File Source="$(TOOLCHAIN_ROOT)\usr\bin\SwiftSyntax.dll" />
       </Component>