multi-input element

[mr-highball]

Need to add a memo (multi line text) element

• [x] base interface and class
  • [x] property enum and method
  • [x] event enum and method
  • [x] helper method NewNyx...()
• [x] browser
  • [x] abstract property methods
  • [x] notify on event
• [ ] standard
  • [ ] abstract property methods
  • [ ] notify on event