feat(validation-kit): introduce HardenedHttpsValidationKit with enhanced documentation and examples

[Gldywn]

• Added new dependencies: https-proxy-agent, node-forge, and selfsigned to package.json and package-lock.json.
• Updated the test:e2e script in package.json to include --detectOpenHandles for better resource management during tests.
• Enhanced README with clearer descriptions of the HardenedHttpsAgent and HardenedHttpsValidationKit, including usage examples and customization options.
• Improved example scripts to enable logging and provide better feedback during requests.

Description

Related Issue

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)
• This change requires a documentation update

Checklist

• I have read the CONTRIBUTING.md file.
• 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.
• Any dependent changes have been merged and published in downstream modules.

[codecov]

Codecov Report

❌ Patch coverage is 98.64865% with 1 line in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
src/utils/from-unified-ct-log-list.ts	50.00%	1 Missing ⚠️

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