input: Refactor Input, Picker as stateless mode.

[huacnlee]

This PR to improve TextInput and NumberInput as a stateless mode by split a TextState to keep the editing state.

• TextInput, ColorPicker - RenderOnce for appearance
• TextState, ColorState - Entity For keep editing state

So we can easily control the UI style in render stage.

Break Changes

• TextInput separated to as InputState (for Entity) and TextInput for render.

  - let text_input = cx.new(|cx| TextInput::new(window, cx))
  + let input_state = cx.new(|cx| InputState::new(window, cx))

  - div().child(text_input);
  + div().child(TextInput::new(text_input));

• TextInput - Renamed text to value, set_text to set_value and also added default_value method to set default value.

• ColorPicker separated to as ColorPickerState and ColorPicker like input.

• Calendar separated to as CalendarState and Calendar like input.

  • Added bordered and default true to Calendar.

• DatePicker separated to as DatePickerState and DatePicker like input.

• Slider separated to as SliderState and Slider like input.

  • Add disabled state to slider.

• Dropdown separated to as DropdownState and Dropdown.