Replace Copy Source Icon with Code or CSS Icon

[AngeloAnolin]

Is your feature request related to a problem? Please describe.
In the homepage, when you hover over a shape, the icons are displayed:

• Add Like
• Export Shape
• Copy Source

The Copy Source icon is a misnomer as we are not explicitly copying the source, but rather displaying a modal that shows the CSS snipper required to render the shape.

Describe the solution you'd like
I am proposing to replace the icon with either:

• Code icons: BsCodeSlash or BsCodeSquare
• CSS icons: FaCss3 or RiCss3Line

I would also update the text on hover to display Show source to describe the purpose of the icon.

Describe alternatives you've considered
No other alternatives but rather to be more explicit on the icon used and the description.

Additional context
Would like to work on this feature as part of Hacktoberfest.

[github-actions]

Hey contributor, Thanks for raising this issue. One of our maintainers of this project will soo reach out you, Till then Happy Coding 😃