Separate body logic and clean up page component

[Ynitial]

Added bodyFirst and bodyLast slots (mostly for scripts from eg. Google Tag Manager). Also cleanup page.blade.php to separate different head logic

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Note

Adds bodyFirst/bodyLast slots and restructures head meta tags into SEO, Open Graph, and Twitter groups with canonical/robots and OG image dimensions.

• Core UI (packages/core/resources/views/components/page.blade.php):
  • Body slots: Add bodyFirst and bodyLast around {{ $slot }}.
  • Head cleanup & structure:
    • SEO: robots, conditional canonical, description, keywords.
    • Open Graph: og:type, og:title/url/description, og:image with og:image:width and og:image:height, og:site_name, og:locale.
    • Twitter: twitter:card, twitter:title/description/image/url.
  • Minor ordering/cleanup of existing tags.

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