Tags helpers for HTML elements.

Changes for 0.03 - 2024-02-04T18:00:04+01:00

• Add Option tests.
• Add doc for Utils.
• Add label for Textarea.
• Another fix of Form processing.
• Fix CSS processing in Form.
• Fix doc in Form.
• Fix doc in Option.
• Fix module abstract.
• Implement Utils::tags_label().
• Improve A element output.
• Rename variable in Utils.
• Rewrite Input to use helpers.
• Simplify Form in same way as other objects.
• Update copyright years.