feat: implemented slice based pool

[fahimfaisaal]

Description

Brief description of what this PR does.

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update
• Performance improvement
• Refactoring

Changes Made

Testing

• Tests pass locally
• Added new tests for the changes
• Updated existing tests if needed

Performance Impact

• No performance impact
• Performance improvement
• Potential performance regression (explain below)

Checklist

• Code follows the project's style guidelines
• Self-review of code completed
• Code is commented where necessary
• Documentation updated if needed
• No new warnings or errors introduced

Related Issues

Fixes #(issue number)

Additional Notes

Any additional information that reviewers should know.

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✨ Finishing Touches

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• Commit unit tests in branch exp/slice-based-pool

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[codecov]

Codecov Report

Attention: Patch coverage is 85.92593% with 19 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
internal/pool/pool.go	80.61%	13 Missing and 6 partials ⚠️

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