feat: report installation progress to terminal

[hunger]

Description

Report installation progress to terminal so it can draw a progress bar or whatever the terminal is configured to do with those reports.

How Has This Been Tested?

By running it on Linux in a VTE-based terminal. It should also work in iterm2 and the new windows terminal, but I did not test that.

Terminals that do not support OSC9 escape sequences should just ignore this. That works fine for me when running pixi in zellij.

AI Disclosure

• This PR contains AI-generated content.
  • I have tested any AI-generated content in my PR.
  • I take responsibility for any AI-generated content in my PR.

Tools: Claude

Checklist:

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added sufficient tests to cover my changes.
• I have verified that changes that would impact the JSON schema have been made in schema/model.py.

[baszalmstra]

Does this also work with --no-progress?

[Hofer-Julian]

Does this also work with --no-progress?

At the moment, it still shows the progress emoji if --no-progress is given.
@baszalmstra says it should be hidden in that case

[hunger]

The latest version I pushed only prints out the escape codes if the progress bar is visible (== not hidden).

It works with --no-progress now.