add support for font styles

[imnotashrimp]

Add support for bold, italics, link.

Should be simple enough with a regex on each string.

I think support for basic markdown/HTML should work here. Plugin should strip the markup and leave only the text

• Bold
  • **text**, or __text__
  • <b>text</b>
• Italics
  • _text_ or *text*
  • <i>text</i>
• Links - strip the URL, leave only the placeholder
  • [text](https://whatever)
  • <a href="http://whatever data-other-attributes='also-whatever'>text</a>
• Code
  • `text`
  • <code>text</code>

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Open questions

• How are we to handle things like using stars as decoration and not as markup? e.g., ***********
• Probably worth using a library.
• Commonmark only. No special markdown requirements.

Decisions that should be left out for now

• Leave color handling out. There are lots of questions for this one, and I think I should wait for actual requests to come in before thinking through this one.

MVP decisions

• Bold & italic only. Leave code and links for future release.