Update and Reorganize SEO Tools List with New Categories and Links

[teles]

This PR updates the Awesome SEO list by introducing a more structured and user-friendly organization. The tools are now categorized alphabetically, making it easier to navigate and locate relevant tools. Additionally, the list has been expanded with new tools and articles, with clear distinctions between site auditing, performance, keyword research, and more.

Key updates include:

• New categories such as “Performance and Speed,” “Keyword and Competitor Research,” and “Rich Snippets and Structured Data.”
• New tools added to categories like “Content and Social Media” and “Analysis and Site Auditing.”
• Language indicators (🇧🇷 for Portuguese content and 🇬🇧 for English content) in the “Articles and eBooks” section for easier access to content by language.

This update enhances the usability and structure of the list, providing clear sections for different SEO tasks and resources.