Add Markdown Support

[cengelbart39]

Description

Add support for Markdown

Related Issues

• 10

Checklist

• [x] I read and understood the contributing guide as well as the code of conduct
• [x] The issues this PR addresses are related to each other
• [x] My changes generate no new warnings
• [x] My code builds and runs on my machine
• [x] My changes are all related to the related issue above
• [x] I documented my code

[cengelbart39]

Waiting for #40 to be merged. A new PR for Markdown will be submitted after that happens.

[cengelbart39]

Following the merge of #40, a new PR, #42 is open with the additions of highlighting and injection.