sdc4-validator 0.1.0

High-performance XML Schema validator with Semantic Data Charter (SDC4) support
Documentation
# Pull Request

## Description

Please include a summary of the changes and which issue is fixed. Include relevant motivation and context.

Fixes # (issue)

## Type of Change

Please delete options that are not relevant.

- [ ] 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
- [ ] Code refactoring
- [ ] Other (please describe):

## Changes Made

Please provide a detailed list of changes made in this PR:

-
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## Testing

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce.

- [ ] Test A
- [ ] Test B

**Test Configuration**:
- Rust version:
- Platform:
- Additional details:

## 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
- [ ] Any dependent changes have been merged and published
- [ ] I have checked my code and corrected any misspellings
- [ ] I have run `cargo fmt` to format my code
- [ ] I have run `cargo clippy` and addressed any warnings

## Breaking Changes

If this PR introduces breaking changes, please describe them and the migration path for existing users:

-

## Screenshots (if applicable)

Add screenshots to help explain your changes.

## Additional Notes

Add any other context about the PR here.