feat: Add MkDocs website with GitHub Pages deployment

[Snider]

This commit adds a new documentation website built with MkDocs and the Material theme.

The website includes pages for:

• Trix & Sigil Chaining
• Hashing
• Checksums
• RSA
• Standalone Sigils

A GitHub Actions workflow is also included to automatically build and deploy the site to GitHub Pages when changes are merged into the main branch.

[coderabbitai]

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📝 Walkthrough

Summary by CodeRabbit

Release Notes

• Documentation

  • Added comprehensive guides covering Trix & Sigil Chaining, hashing, checksums, RSA encryption, and standalone sigils.
  • Published Enchantrix documentation with Trix File Format overview and examples.

• Chores

  • Configured GitHub Pages publishing for documentation.

Walkthrough

Establishes documentation infrastructure for the Enchantrix Go-based cryptographic library by introducing MkDocs configuration, automated GitHub Pages publishing workflow, and seven documentation pages demonstrating cryptographic operations including hashing, checksums, RSA encryption, and sigil chaining.

Changes

Cohort / File(s)	Summary
GitHub Actions Workflow .github/workflows/mkdocs.yml	Adds automated publishing workflow triggering on main branch pushes, deploying MkDocs documentation to GitHub Pages using Python 3.x and mkdocs-material theme
MkDocs Configuration docs/mkdocs.yml	Defines site metadata, theme settings, and navigation structure with Home, Trix File Format, and Examples sections linking to documentation pages
Documentation Pages docs/docs/index.md, docs/docs/trix_and_sigils.md, docs/docs/hashing.md, docs/docs/checksums.md, docs/docs/rsa.md, docs/docs/standalone_sigils.md	Introduces six documentation files containing Go code examples demonstrating Enchantrix features: library overview, payload encryption with sigil chaining, hash algorithm usage, checksum validation, RSA key pair operations, and standalone sigil transformations

Poem

🐰 Documentation blooms, so fair and bright,
With examples dancing in the light,
From checksums to sigils, from RSA's might,
Enchantrix's secrets now take flight,
In pages of magic, both tested and right!

✨ Finishing touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch add-mkdocs-website

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📜 Recent review details

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Review profile: ASSERTIVE

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📥 Commits

Reviewing files that changed from the base of the PR and between 3ab55c9 and 209b2e3.

📒 Files selected for processing (8)

• .github/workflows/mkdocs.yml (1 hunks)
• docs/docs/checksums.md (1 hunks)
• docs/docs/hashing.md (1 hunks)
• docs/docs/index.md (1 hunks)
• docs/docs/rsa.md (1 hunks)
• docs/docs/standalone_sigils.md (1 hunks)
• docs/docs/trix_and_sigils.md (1 hunks)
• docs/mkdocs.yml (1 hunks)

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

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