Standardize Naming and Update Documentation with Complexity Analysis

[ppant]

This change standardizes the repository's naming convention by moving to PascalCase for directories and Python scripts. It also comprehensively updates all README files to include time complexity analysis for each algorithm, ensures consistent formatting, and fixes Table of Contents anchor links in the root README.

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PR created automatically by Jules for task 10174782143220760571 started by @ppant

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