feat: add AJ Walker Alias Method implementation for random probability distribution

[coffeexcoin]

• feat: add LibAlias (implementation of AJ Walker Alias method) for random probability calculation
• adjust pragma

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PR-Codex overview

This PR introduces the LibAlias library for efficient weighted random sampling using the alias method. It includes functionality for constructing an alias table, selecting random indices, and handling probabilities and aliases.

Detailed summary

• Added LibAlias library for weighted random sampling.
• Implemented select function for O(1) sampling.
• Added setRaw function to set alias table from preprocessed data.
• Created fill function for constructing alias table from weights.
• Introduced error handling for array length mismatches.
• Developed tests in LibAliasTest for various sampling scenarios.

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