Add back CHANGELOG.md reference to solution file (#5599)

* Initial plan

* Add back CHANGELOG.md reference to LibsAndSamples.sln

Co-authored-by: neha-bhargava <61847233+neha-bhargava@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: neha-bhargava <61847233+neha-bhargava@users.noreply.github.com>

Author: Copilot

LibsAndSamples.sln

@@ -46,6 +46,7 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "all", "all", "{C44AADC0-1E9
 		.editorconfig = .editorconfig
 		.gitattributes = .gitattributes
 		.gitignore = .gitignore
+		CHANGELOG.md = CHANGELOG.md
 		build\CodeCoverage.runsettings = build\CodeCoverage.runsettings
 		build\credscan-exclusion.json = build\credscan-exclusion.json
 		Directory.Build.props = Directory.Build.props