chainsaw: add ldflags

pkgs/tools/security/chainsaw/default.nix

···
     darwin.apple_sdk.frameworks.CoreFoundation
   ];
 
+  ldflags = [
+    "-w"
+    "-s"
+  ];
+
   meta = with lib; {
     description = "Rapidly Search and Hunt through Windows Forensic Artefacts";
-    mainProgram = "chainsaw";
     homepage = "https://github.com/WithSecureLabs/chainsaw";
     changelog = "https://github.com/WithSecureLabs/chainsaw/releases/tag/v${version}";
     license = licenses.gpl3Only;
     maintainers = with maintainers; [ fab ];
+    mainProgram = "chainsaw";
   };
 }