Adds color slugs compatibility

[JohnPixle]

Added the css fallback at the end of the file.

.has-ti-bg-inv-background-color {background-color:var(--wp--preset--color--raft-bg-inv);}
.has-ti-bg-background-color {background-color:var(--wp--preset--color--raft-bg);}
.has-ti-bg-alt-background-color {background-color:var(--wp--preset--color--raft-bg-alt);}
.has-ti-fg-alt-color  {color:var(--wp--preset--color--raft-fg-alt);}
.has-ti-accent-background-color {background-color:var(--wp--preset--color--raft-accent);}
.has-ti-accent-secondary-background-color {background-color:var(--wp--preset--color--raft-accent-secondary);}

This should apply the styles on both the frontend and the editor. I will test it.

Closes #119 .

[pirate-bot]

Plugin build for 6c846d3 is ready 🛎️!

• Download Raft - build 🔗

[JohnPixle]

@abaicus I did at the CSS, but I think It messed up judging from the failing test 🙈
Anyway, feel free to adapt as required, I'll leave it to you.

I tested the build on a taste instance and it works as expected with the colors. So basically it works.

Thanks in advance.

[abaicus]

@JohnPixle Should be fine now! 👍🏻

[pirate-bot]

Plugin build for cc68aae is ready 🛎️!

• Download Raft - build 🔗

[pirate-bot]

🎉 This PR is included in version 1.1.5 🎉

The release is available on GitHub release

Your semantic-release bot 📦🚀