Comprehensive Documentation Update and Naming Refactor

[ppant]

This PR significantly improves the repository's documentation and consistency:

1. Naming Standardization: Directories like deque and Error-debug were renamed to Deque and ErrorHandling. All 50 Python scripts were renamed to follow PascalCase (e.g., Anagram_Check_Sorted_Sol.py to AnagramCheckSortedSol.py).
2. Complexity Analysis: Every algorithm now includes its Big O time complexity in the relevant README.md files using LaTeX notation.
3. Documentation Fixes: The root README.md was updated to reflect new file paths. Internal Table of Contents links were fixed to work with GitHub's slugging rules for headings with emojis.
4. Verification: All non-interactive scripts were verified to run successfully with Python 3, and all relative links in Markdown files were checked for validity.

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PR created automatically by Jules for task 6646274587562958151 started by @ppant

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