Replace `picocolors` with builtins

[aklinker1]

Feature Request

Use node:util#styleText for text coloring

Was added in node 20.12, which is around the min version WXT supports... Maybe this should go in the major branch and be mentioned in the upgrade notes to be careful.

[aklinker1]

Not gonna do this, picocolors will turn off in envs that don't support color, whereas nodes built-in will not. Plus picocolors is used by other dependencies, so it will be downloaded anyways.

[aklinker1]

Actually, it does support no-color mode.