Add a Cursive Font

[EndriTuma]

Idk how to add pull requests so im just putting it on issues.
So, tonsky why dont you add a cursive font?
Yes, I do know the Fira Code IScript font but i dont like how they made it.
So can you make a cursive font please?
And try to make it how Cascadia Code does

[tonsky]

I like the idea, but it’s too much effort for me

[EndriTuma]

Basic Cursive would do

[alexeyten]

There is custom italic variant #513