feat!: handle color states on form elements (#234)

docs/content/3.forms/8.form-group.md

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+---
+github: true
+description: Display a label and additional informations around a form element.
+---
+
+
+## Usage
+
+Use the FormGroup component around an [Input](/forms/input), [Textarea](/forms/textarea), [Select](/forms/select) or a [SelectMenu](/forms/select-menu) with the `name` prop to automatically associate a `<label>` element with the form element.
+
+::component-card
+---
+props:
+  name: 'email'
+  label: 'Email'
+code: >-
+
+  <UInput placeholder="you@example.com" icon="i-heroicons-envelope" />
+---
+
+#default
+:u-input{placeholder="you@example.com" icon="i-heroicons-envelope"}
+::
+
+### Required
+
+Use the `required` prop to indicate that the form element is required.
+
+::component-card
+---
+baseProps:
+  name: 'group-required'
+props:
+  label: 'Email'
+  required: true
+code: >-
+
+  <UInput placeholder="you@example.com" icon="i-heroicons-envelope" />
+---
+
+#default
+:u-input{placeholder="you@example.com" icon="i-heroicons-envelope"}
+::
+
+### Description
+
+Use the `description` prop to display a description below the label.
+
+::component-card
+---
+baseProps:
+  name: 'group-description'
+props:
+  label: 'Email'
+  description: "We'll only use this for spam."
+code: >-
+
+  <UInput placeholder="you@example.com" icon="i-heroicons-envelope" />
+---
+
+#default
+:u-input{placeholder="you@example.com" icon="i-heroicons-envelope"}
+::
+
+### Hint
+
+Use the `hint` prop to display a hint above the form element.
+
+::component-card
+---
+baseProps:
+  name: 'group-hint'
+props:
+  label: 'Email'
+  hint: 'Optional'
+code: >-
+
+  <UInput placeholder="you@example.com" icon="i-heroicons-envelope" />
+---
+
+#default
+:u-input{placeholder="you@example.com" icon="i-heroicons-envelope"}
+::
+
+### Help
+
+Use the `help` prop to display an help message below the form element.
+
+::component-card
+---
+baseProps:
+  name: 'group-help'
+props:
+  label: 'Email'
+  help: 'We will never share your email with anyone else.'
+code: >-
+
+  <UInput placeholder="you@example.com" icon="i-heroicons-envelope" />
+---
+
+#default
+:u-input{placeholder="you@example.com" icon="i-heroicons-envelope"}
+::
+
+### Error
+
+Use the `error` prop to display an error message below the form element.
+
+When used together with the `help` prop, the `error` prop will take precedence.
+
+::component-card
+---
+baseProps:
+  name: 'group-error'
+props:
+  label: 'Email'
+  help: 'We will never share your email with anyone else.'
+  error: "Not a valid email address."
+code: >-
+
+  <UInput placeholder="you@example.com" trailing-icon="i-heroicons-exclamation-triangle-20-solid" />
+---
+
+#default
+:u-input{model-value="benjamincanac" placeholder="you@example.com" trailing-icon="i-heroicons-exclamation-triangle-20-solid"}
+::
+
+You can also use the `error` prop as a boolean to mark the form element as invalid.
+
+::alert{icon="i-heroicons-light-bulb"}
+  The `error` prop will automatically set the `color` prop of the form element to `red`.
+::
+
+## Props
+
+:component-props
+
+## Preset
+
+:component-preset