Should we install asdf? #1

The community seems to be moving towards asdf for package management, and away from using rvm/pyenv/nvm/pgvm separately.

If we:

• install asdf in our image
• use it to install several commonly used versions of each of the above tools
• include a .tool-versions file in every project

Will it automatically select the right version of everything upon opening a Gitpod/Codespace workspace?

Will it allow for installing new versions of things (and persist them)? I imagine no in Gitpod, but maybe in Codespaces?