chore: clean up and refine package.json scripts

[halvaradop]

Description

This pull request refines the package.json by removing unnecessary scripts and consolidating them for simplicity. Key changes include:

• Updated the description field for better clarity.
• Removed redundant build:core and build:ci scripts.
• Refactored the build:ci script to use the standard build command for better integration with the ci.yaml workflow file.

Checklist

• Added documentation.
• The changes do not generate any warnings.
• I have performed a self-review of my own code
• All tests have been added and pass successfully

Notes

[github-actions]

Thank you, @halvaradop, for your contribution to halvaradop/tailwindcss-utilities.

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