[package_manager] Add SourceControl dll

`SourceControl` has been made a shared library in
swiftlang/swift-package-manager#8124.

Author: Steelskin

platforms/Windows/cli/cli.wxs

@@ -227,6 +227,9 @@
       <Component>
         <File Source="$(TOOLCHAIN_ROOT)\usr\bin\PackageModelSyntax.dll" />
       </Component>
+      <Component>
+        <File Source="$(TOOLCHAIN_ROOT)\usr\bin\SourceControl.dll" />
+      </Component>
       <Component>
         <File Source="$(TOOLCHAIN_ROOT)\usr\bin\SPMBuildCore.dll" />
       </Component>