`vue/prefer-true-attribute-shorthand`: add `except` option

[FloEdelmann]

What rule do you want to change?
vue/prefer-true-attribute-shorthand

Does this change cause the rule to produce more or fewer warnings?
Depends on configuration. No changes by default.

How will the change be implemented? (New option, new default behavior, etc.)?
New option except that allows specifying attribute names that should be specified in longhand form if the rule is set to always or in shorthand form if the rule is set to never.

Please provide some example code that this change will affect:

{
  "vue/prefer-true-attribute-shorthand": ["error", "always", {
    "except": ["value", "/^foo-/"]
  }]
}

<template>
  <MyComponent is-shorthand :value="true" foo-bar />
</template>

What does the rule currently do for this code?
It doesn't warn for is-shorthand and foo-bar, but it warns for value.

What will the rule do after it's changed?
It still shouldn't warn for is-shorthand, but it shouldn't warn for value and should warn for foo-bar.

Additional context
The motivating example uses PrimeVue's RadioButton component:

<template>
  <RadioButton v-model="likesPizza" name="pizza" :value="true" />
  <RadioButton v-model="likesPizza" name="pizza" :value="false" />
</template>

Using the shorthand syntax for the first component's value prop would be less readable.