fix: show additional mise.toml tools in output summary

[manasa-bhagwat]

This PR addresses #419, adds test coverage for the new output behavior, and passes mise run check and mise run test.

Summary

• Add an informational output line when additional tools are detected from mise.toml beyond provider-resolved packages.
• Show up to 3 additional tool names and append , etc. when there are more.
• Keep the existing Packages table focused on resolved/provider packages.

Reproduction (before)

• Ran:
  • mise run cli -- --verbose build --show-plan examples/mise-config
• examples/mise-config/mise.toml defines node, bun, python, go.
• Output only listed node and bun in Packages, with no mention of extra tools.

After

• Output now includes:
  • Also installing additional tools from mise.toml: go, python

Test Plan

• mise run check
• mise run test
• Manual validation:
  • mise run cli -- --verbose build --show-plan examples/mise-config
  • mise run cli -- --verbose info examples/mise-config

[iloveitaly]

Thanks so much for this! Left some comments. I love the idea here and would like to get this merged!

[manasa-bhagwat]

@iloveitaly I’ve addressed the review feedback and updated the evidence screenshot.

Could you please take another look when you have a moment?.

[iloveitaly]

We don't want to display every package in mise.toml. It could get a little crazy and most folks who have a lot in their mise config know it's there, so it doesn't add much value to display it.

I think what we should do here is:

1. Limit the number of mise packages we display to 5
2. This is display-only logic, so we if we can keep it contained to a single method which makes it clear this only for displaying more info to users that would be great.

[iloveitaly]

why did we need this?