drawio: add a check phase

pkgs/applications/graphics/drawio/default.nix

@@ -86,6 +86,12 @@ stdenv.mkDerivation rec {
       --replace /opt/drawio/drawio $out/bin/drawio
   '';
 
+  doInstallCheckPhase = true;
+
+  installCheckPhase = ''
+    $out/bin/drawio --help > /dev/null
+  '';
+
   meta = with lib; {
     description = "A desktop application for creating diagrams";
     homepage = "https://about.draw.io/";