Put the settings below into .vscode/settings.json

{
    "terminal.integrated.profiles.linux": {
    //...existing profiles...
    "tmux": {
      "path": "tmux",
      "args": ["attach-session", "-d", "-t", "latte:${workspaceFolderBasename}"]
    },
  }, 
  "terminal.integrated.defaultProfile.linux": "tmux",
  "terminal.integrated.fontSize": 11
}