feat: add environments to the info command output

[ruben-arts]

This now also lists the enviroments defined in the environment:

      Pixi version: 0.12.0
          Platform: linux-64
  Virtual packages: __unix=0=0
                  : __linux=6.5.12=0
                  : __glibc=2.36=0
                  : __cuda=12.3=0
                  : __archspec=1=x86_64
         Cache dir: /home/rarts/.cache/rattler/cache
      Auth storage: /home/rarts/.rattler/credentials.json

Project
------------
           Version: 0.12.0
     Manifest file: /home/rarts/development/pixi/pixi.toml
      Last updated: 16-01-2024 11:12:41

Environments
------------
default
          Features: default
          Channels: conda-forge
  Dependency count: 10
      Dependencies: pre-commit, rust, openssl, pkg-config, git, mkdocs, mkdocs-material, pillow, cairosvg, compilers
  Target platforms: linux-64, osx-64, osx-arm64, win-64
             Tasks: build, test-all, build-docs, docs, install, lint, test

foobar
          Features: foo, bar, default
          Channels: conda-forge
  Dependency count: 12
      Dependencies: foo, bar, pre-commit, rust, openssl, pkg-config, git, mkdocs, mkdocs-material, pillow, cairosvg, compilers
  Target platforms: linux-64, osx-64, osx-arm64, win-64
             Tasks: lint, test-all, docs, test, build, install, build-docs

I made this in an attempt to help the users and us to debug the coming multi environment feature.

I feel that the setup of the code could use some more love as this didn't feel logical or comfortable. But it gets the job done for now. Maybe later we can implement some beter serialization of the environments to help improve this output.