Add "orphan" files from bdx to gn (project-chip#31874)

* Add "orphan" files from bdx to gn

This should help layer enforcement.

* Restyle

Author: andy31415

src/protocols/bdx/BUILD.gn

@@ -25,10 +25,12 @@ static_library("bdx") {
     "BdxTransferProxyDiagnosticLog.h",
     "BdxTransferServer.cpp",
     "BdxTransferServer.h",
+    "BdxTransferServerDelegate.h",
     "BdxTransferSession.cpp",
     "BdxTransferSession.h",
     "BdxUri.cpp",
     "BdxUri.h",
+    "DiagnosticLogs.h",
     "StatusCode.cpp",
     "StatusCode.h",
     "TransferFacilitator.cpp",