Add configuration debugpyPath

When developping my project in specific environments, I want to use a specific executable of debugpy, like I can for formatting (e.g. black) or linting (e.g. flake8).

Or maybe just be able to let python pickup the available debugpy.

Current behavior: VS Code Python only use its own .vscode-server-insiders/extensions/ms-python.python-2020.10.332292344/pythonFiles/lib/python/debugpy/launcher

For now I have to use this setup to debug my projects:

{
    "version": "0.2.0",
    "configurations": [
        {
            "name": "Start debug (Nix)",
            "request": "launch",
            "type": "node-terminal",
            "command": "nix-shell --run 'python -m debugpy --listen localhost:5678 --wait-for-client -m myproject'",
            "env": {}
        },
        {
            "name": "Connect debug (Nix)",
            "type": "python",
            "request": "attach",
            "port": 5678,
        }
    ]
}

[karthiknadig]

This is available, via debugAdapterPath.

        {
            "name": "Launch: program",
            "type": "python",
            "request": "launch",
            "console": "integratedTerminal",
            "program": "${file}",
            "debugAdapterPath": "<path-to-installed-libraries>/debugpy/adapter",
        },

You will see squiggles, since this is not exposed via launch.json schema. But it should work.

[karthiknadig]

@vvijayalakshmi21 yes