message: Add meaning full instanceId
diff: @@ -348,6 +348,10 @@ export async function vsInstallations(): Promise<VSInstallation[]> {
  const vs_installs = JSON.parse(vswhere_res.stdout) as VSInstallation[];
  for (const inst of vs_installs) {
  + const majorVersion = parseInt(inst.installationVersion);
  + if (majorVersion >= 15) {
  + inst.instanceId = `VisualStudio.${majorVersion}.0`;
  + }
  if (inst_ids.indexOf(inst.instanceId) < 0) {
  installs.push(inst);
  inst_ids.push(inst.instanceId);
  