Replace chalk with node:util.styleText (#1834)

* Replace chalk with node:util.styleText

Replace usages of the external 'chalk' module with the built-in node:util.styleText across CLI code and formatters to remove/avoid the chalk dependency. Update formatter implementations (compact, default, unix, formatter) and htmlhint CLI to use styleText, adjust stdin data handling to normalize chunks to strings, and update related tests. Also clean up .gitignore entries and bump package metadata (package.json/package-lock.json) to match the changes.

* Update src/cli/htmlhint.ts

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

---------

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: coliff

.gitignore

@@ -27,9 +27,6 @@ yarn-error.log*
 .nyc_output
 coverage
 
-# Compiled binary addons (https://nodejs.org/api/addons.html)
-build/Release
-
 # Dependency directory
 # Commenting this out is preferred by some people, see
 # https://www.npmjs.org/doc/misc/npm-faq.html#should-i-check-my-node_modules-folder-into-git-
@@ -40,9 +37,6 @@ node_modules
 .AppleDouble
 .LSOverride
 
-# Babel-compiled files
-lib
-
 # Test related files
 test/unit/coverage
 test/e2e/reports