Merged in feat/3685-new-textarea-component (pull request #3392)

feat(SW-3685): Add new TextArea and FormTextArea components

* Add new TextArea and FormTextArea components

* Update example form with description

* Merge branch 'master' into feat/3685-new-textarea-component

* Formatting new files with new prettier config

* Added custom controls for the text area story


Approved-by: Linus Flood

packages/design-system/lib/components/Form/FormTextArea/textarea.ts

@@ -0,0 +1,20 @@
+import type { RegisterOptions } from "react-hook-form"
+import type { IntlShape } from "react-intl"
+
+import type { TextAreaProps } from "../../TextArea/types"
+import { MaterialIconProps } from "../../Icons/MaterialIcon"
+
+export interface FormTextAreaProps extends TextAreaProps {
+  /** Helper text displayed below the textarea (hidden when there's an error) */
+  description?: string
+  /** Icon to display with the description text. Defaults to 'info' */
+  descriptionIcon?: MaterialIconProps["icon"]
+  /** Field name for react-hook-form registration */
+  name: string
+  /** react-hook-form validation rules */
+  registerOptions?: RegisterOptions
+  /** Hide the error message (useful when showing errors elsewhere) */
+  hideError?: boolean
+  /** Custom formatter for error messages with i18n support */
+  errorFormatter?: (intl: IntlShape, errorMessage?: string) => string
+}