feat: parser

[pi0]

🔗 Linked issue

❓ Type of change

• 📖 Documentation (updates to the documentation, readme, or JSdoc annotations)
• 🐞 Bug fix (a non-breaking change that fixes an issue)
• 👌 Enhancement (improving an existing functionality like performance)
• ✨ New feature (a non-breaking change that adds functionality)
• 🧹 Chore (updates to the build process or auxiliary tools and libraries)
• ⚠️ Breaking change (fix or feature that would cause existing functionality to change)

📚 Description

Adds markdown to simplified JSON parser utils. (note: JSON object types are unstable for now)

Reference:

• types
• input
• output

Implementations:

• markdown-it
• mdast-util-from-markdown
• md4w (waiting for render to json ije/md4w#4)

Currently, both implementations return the same object but some things are disabled:

• inline HTML (supported but inconsistent)
• Github tables
• Images

📝 Checklist

• I have linked an issue or discussion.
• I have updated the documentation accordingly.