refactor(ansis): replace ansis dep with node api

[SoftAndoWeto]

Hi, this PR replacing the direct ansis dependency with Node.js API (styleText).

Description

This PR adds a util styleText. It also updates generated workspace label colors to use styleText formats instead of ansis color functions.
The tsdown-migrate package now uses styleText directly, and ansis has been removed from the package manifests, workspace catalog, and lockfile importers.

Linked Issues

Closes #530

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tsdown

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create-tsdown

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@tsdown/css

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@tsdown/exe

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tsdown-migrate

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commit: 52393fd

[sxzz]

#530 (comment)