Feature/small text support

[Andre601]

Pull Request Etiquette

• [x] I have checked the PRs for upcoming features/bug fixes.
• [x] I have read the contributing guidelines.

Changes

• [ ] Internal code
• [x] Library interface (affecting end-user code)
• [ ] Documentation
• [ ] Other: _____

Closes Issue: NaN

Description

Adds support for Discord's planned small-text format (-# text) to the MarkdownUtil and MarkdownSanitizer.

I'm sure that I haven't covered everything, so I feel free to point out any missing parts.

This remains a draft until the feature is added and documented by Discord.

[MinnDevelopment]

I think this is now released, is there anything left to do?

[Andre601]

I think this is now released, is there anything left to do?

Mainly a way to sanitize/escape it... Not sure how to implement this...