Add utility to set position of text underline

[sntran]

For example:

.underline-auto {
  text-underline-position: auto;
}

.underline-under {
  text-underline-position: under;
}

.underline-left {
  text-underline-position: left;
}

.underline-under {
  text-underline-position: right;
}

[johnjago]

As of May 2024 it doesn't appear to be in Tailwind yet. Browser support is at 98.6% for modern browsers, so I think it's reasonable to add it. https://caniuse.com/?search=text-underline-position