chore: 🤖 build out textarea component

addons/rose/addon/components/rose/form/input.js

@@ -2,7 +2,7 @@ import Component from '@ember/component';
 import layout from '../../../templates/components/rose/form/input';
 
 /**
- * A simple HTML `<button>` element.
+ * A simple HTML `<input>` element.
  *
  * @example
  *  <Rose::Form::Input

addons/rose/addon/components/rose/form/textarea.js

@@ -0,0 +1,20 @@
+import Component from '@ember/component';
+import layout from '../../../templates/components/rose/form/textarea';
+
+/**
+ * A `<textarea>` element essentially identical to `Rose::Form::Input` except
+ * for the field element.
+ *
+ * @example
+ *  <Rose::Form::Textarea
+ *    @value="Text"
+ *    @label="Label"
+ *    @helperText="Helper text"
+ *    @error={{true}}
+ *    disabled={{true}}
+ *    readonly={{true}}
+ *    />
+ */
+export default Component.extend({
+  layout,
+});