Add Button: Copy Code Block Contents

[virgile-dev]

Is your feature request related to a problem? Please describe.
Currently I have to select the content of my code block to copy paste it somewhere else.
The issue with this is that a \ is added at the end of each line.

Describe the solution you'd like
Add a copy icon like there is in Notion

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

Additional context

firefox_TXksD4p2Vf.mp4

Bonus

• I'm a sponsor and would appreciate if you could look into this sooner than later 💖

[woutervroege]

As far as the bug, linking #2377