Define recommended way to implement input and form controls

[gius]

Should validation be included in inputs? How to customize form fields?

[gius]

Check:

• https://github.com/eManPrague/frui.ts/blob/feature/next/packages/htmlcontrols/src/controls/textbox.tsx
• https://github.com/eManPrague/frui.ts/blob/feature/next/packages/htmlcontrols/src/controls/checkbox.tsx