Add linear gradient direction

[czernika]

Hi there!

My idea is maybe to refactor a little bg-gradient-to-[direction] utilltiy class so it may accepts angle direction. This way I can change --tw-gradient-direction CSS variable later if I needed

For example bg-gradient-to-tr would generate

.bg-gradient-to-tr {
    --tw-gradient-direction: to top right;
    background-image: linear-gradient(var(--tw-gradient-direction), var(--tw-gradient-stops));
}

And allow numerical directions like bg-gradient-to-10 or bg-gradient-to-[15deg]

.bg-gradient-to-10 {
    --tw-gradient-direction: 10deg;
    background-image: linear-gradient(var(--tw-gradient-direction), var(--tw-gradient-stops));
}

I've created similar plugin some time ago but I'm not sure am I allowed to paste my own links)