Add `hintsCss` styles

Here is my `hintsCss` config:
```js
const hintsCss = `
	font-size: 13pt;
	font-family: "Fira Code";
	border: 0px;
	color: ${catppuccin.text} !important;
	background: ${catppuccin.base};
	background-color: ${catppuccin.base}
`

api.Hints.style(hintsCss)
api.Hints.style(hintsCss, "text")
```