Sidebar Reorg and SEO fixes

[thomivy]

Summary of changes

• Added functionality for generating canonical URLs for each page automatically after the google index report issues
• removed permanent redirect rule in next.config.mjs that may be causing indexing issues with Google Search
• reorged sidebar with headers
• Added theme logic for autogenerating SEO content and canonical URLs from page frontmatter and set default values

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Code Checklist

• [ ] I have tested that prove my changes are working as intended
• [ ] I have added necessary documentation (if appropriate)

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