chore: Improvements in handling LD+JSON data

[andremacola]

• Captures all ld+json tags on the site. Previously, it only captured the first one, which resulted in empty captures depending on the type.
• Resolves the issue of improper JSON formatting regarding line breaks in inappropriate places, causing problems in data capture.
• Simplifies the logic of value assignment and better performance.

A real example:

In the url: https://natelinha.uol.com.br/famosos/2024/10/13/esposa-de-rodrigo-faro-vera-viel-compartilha-rotina-no-hospital-apos-cirurgia-217809.php the extraction of the date return empty because the html only has ld+json metadata for this info.

This is fixed with this PR.

For future: I'm thinking to do a more complex logic for ld+json extraction. There is sites for example (like the above one) that include a real author name for the post and not the @sitename like in og:author.

[coveralls]

Pull Request Test Coverage Report for Build 11320262134

Details

• 15 of 15 (100.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.2%) to 92.456%

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Totals
Change from base Build 8984156161:	-0.2%
Covered Lines:	279
Relevant Lines:	281

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💛 - Coveralls

[ndaidong]

@andremacola thank you for your contribution. I will check and merge this soon.