* simplify `inset` plugin
* run `prettier` on stub file
* simplify `align` utility
* improve arbitrary support for outline
This will allow us to use `outline-[OUTLINE,OPTIONAL_OFFSET]`
Input:
```html
outline-[2px_solid_black]
```
Output:
```css
.outline-\[2px_solid_black\] {
outline: 2px solid black;
outline-offset: 0;
}
```
---
Input:
```html
outline-[2px_solid_black,2px]
```
Output:
```css
.outline-\[2px_solid_black\2c 2px\] {
outline: 2px solid black;
outline-offset: 2px;
}
```
* remove default `type`
* simplify createUtilityPlugin, use types directly
* find first matching type when coercing the value
* introduce css data types
Ref: https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Types
These data types will be used to "guess" the type of an arbitrary value
if there is some ambiguity going on. For example:
```
bg-[#0088cc] -> This is a `color` -> `background-color`
bg-[url('...')] -> This is a `url` -> `background-image`
```
If you are using css variables, then there is no way of knowing which
type it is referring to, in that case you can be explicit:
```
bg-[color:var(--value)] -> This is a `color` -> `background-color`
bg-[url:var(--value)] -> This is a `url` -> `background-image`
```
When you explicitly pass a data type, then we bypass the type system and
assume you are right. This is nice in a way because now we don't have to
run all of the guessing type code. On the other hand, you can introduce
runtime issues that we are not able to detect:
```
:root {
--value: 12px;
}
/* Later... */
bg-[color:var(--value)] -> Assumes `color` -> *eventually* -> `background-color: 12px`
```
* add a bunch of new tests for advanced arbitrary values
