pipx support

[jmg-duarte]

Hello! I use Python with pyenv, so that I can switch among versions when necessary, this means that my pip installs are not "permanent" and as such, if I install ansible-dev-tools with pip I'll need to jump around versions or duplicate installs.

If I try using pipx with pipx install ansible-dev-tools, adt becomes available but not ansible-lint and its friends.

Support for pipx would be great to isolate the tool from the installation itself.