4-space indent selected text in description

[arielj]

https://ombulabs.atlassian.net/browse/DT-263

Branch/Commit:

Main branch

Describe the feature:

As a developer
I select some lines from the description
And then I click a button
And I see the selected lines indented with 4 leading white spaces so it's formatted as a block

Problem:

Currently, if we want to add code, we have two methods:

• triple backticks around the code (which is not always reliable and adds a color to the code)
• 4-spaces indentation (which is pretty annoying to adjust the indentation once the code is in the desription box or you have to update the indentation before copying the code)

I will abide by the code of conduct