WiX: add swift-sdk to the SPM distribution

Package up swift-sdk.exe on Windows as well.

Author: compnerd

platforms/Windows/cli/cli.wxs

@@ -197,6 +197,9 @@
       <Component>
         <File Source="$(ToolchainRoot)\usr\bin\swift-run.exe" />
       </Component>
+      <Component>
+        <File Source="$(ToolchainRoot)\usr\bin\swift-sdk.exe" />
+      </Component>
       <Component>
         <File Source="$(ToolchainRoot)\usr\bin\swift-test.exe" />
       </Component>