Adopt lifecycleManagedByParent for debug sessions

[paulacamargo25]

Regarding the issue: microsoft/vscode-python#20376, I already updated the python extension to use this parameter, but in the latest version of debugpy startDebugging is called directly. You have to configure this parameter lifecycleManagedByParent in the debug options.

[gramster]

Looks like around line 745 of adapter/clients.py is where we would add this, although it would need to be plumbed through as a config argument. Maybe we get that for free if it is in the launch.json file.