Form validation pattern

[MI6-451]

Summary

Pattern for conducting validation of data including input validation and form validation.

💬 Description

Additional examples and improvements to the form validation patterns on the design system website.

Consider common error and warning types including connectivity failure, systems offline, extreme data scenarios (too big too small), required fields missing.

Detail custom validation methods.

Consider inline field validation as well as default field validation.

💰 Use value

Additional and/or improved examples of form validation will allow developers to gain a better understanding of what their own implementations should achieve.

Additional info

Related stories

#188 #189 #222 #203 https://github.com/mi6/ic-ui-kit/issues/465