add(shared): new_with_pool_options for a customizable pool creation

[geofmureithi]

Description

Add SharedStorage::new_with_pool_options for a customizable pool creation

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 (no functional changes)

Testing

• I have added tests that prove my fix is effective or that my feature works
• I have run the existing tests and they pass
• I have run cargo fmt and cargo clippy

Checklist

• My code follows the code style of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

Additional Notes

Resolves #44

[codecov-commenter]

Codecov Report

❌ Patch coverage is 75.00000% with 1 line in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
src/shared.rs	75.00%	1 Missing ⚠️

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