[feature]: please respect python.envFile #418
Description
I use marimo-lsp in a corporate environment with no access to https://pypi.org/simple. Instead, I need to fetch packages from an internal mirror. As a consequence, marimo-lsp tries and fails to install ruff and ty when it launches. I could circumvent the issue by providing a different index via the UV_SIMPLE_INDEX environment variable. I already populate that variable in my .env file which is registered via the python.envFile setting (from the Microsoft Python extension for VSCode).
What would it take for marimo-lsp to pick up that environment variable? Note I set python.terminal.useEnvFile to true as well