Restore Link metadata - required for correct output path

The Link metadata is necessary to control where the .dat file is placed in the referencing project's output directory. Without it, the file is copied with its full directory structure preserved.

Co-authored-by: Soar360 <[email protected]>

Author: Copilot

LuYao.ResourcePacker.MSBuild/build/LuYao.ResourcePacker.MSBuild.targets

@@ -14,7 +14,7 @@
       ResourcePattern="$(ResourcePackerPattern)"
       OutputFileName="$(ResourcePackerOutputFileName)" />
 
-    <!-- Add .dat file to None so it gets copied -->
+    <!-- Add .dat file to None so it gets copied to referencing projects -->
     <ItemGroup>
       <None Include="$(OutputPath)$(ResourcePackerOutputFileName)">
         <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>