Support for PDM's .pdm-python file

[KalleDK]

PDM places a .pdm-python (text) file in the root of the project with path to the python binary in the venv currently used.

I would like for it to be a suggestion when selection the interpreter - maybe even have the popup with a new venv found when it changes.

# Example
cat .pdm-python
/home/vscode/.local/share/venv/proxy/bin/python

See more https://pdm-project.org/latest/usage/venv/

Edit:
Multiple people have asked for use cases, so here is a list of some of them

• You use multiple venv's due to either python version or packages installed
• You keep your venv's out of the project folder to not "polute" the path (and save it from git clean)
• You might have a shared venv between 2 or more projects (this is less common though)
• I've tried to add the path with all the venv, but finding the correct between 30+ venvs is a hassle - especially is you have to change between two or more during development

[github-actions]

Thanks for the feature request! We are going to give the community 60 days from when this issue was created to provide 7 👍 upvotes on the opening comment to gauge general interest in this idea. If there's enough upvotes then we will consider this feature request in our future planning. If there's unfortunately not enough upvotes then we will close this issue.

[KalleDK]

Created a very not well tested prototype https://marketplace.visualstudio.com/items?itemName=KalleDK.pdminterpreter

When installed it wil change interpreter based on the .pdm-python automatic, and you can use "Select Interpreter based on PDM" to change between multiple pdm venvs

[KalleDK]

Also here for the code https://github.com/KalleDK/vscode-pdminterpreter @karthiknadig