Add a fitted box option

[MohammedShuqair]

add a fitted box option for small input fields

[salim-lachdhaf]

i do not understand why you added onTap CallBack ?

[MohammedShuqair]

I was looking for a callback that is executed when the DropdownSearch is pressed, later I discovered onBeforePopupOpening so I no longer use onTap and removed it.
The reason I search for onBeforePopupOpening might be useful, I had this case:

1. Auth Screen with CustomTextFormField (name, email etc) and DropdownSearch for country selection.
2. Having Focus on a CustomTextFormField (keyboard shown) 👍
3. Taping on DropdownSearch (keyboard disappeared) 👍
4. Selecting Item From DropdownSearchPopup, popup closed 👍
5. Focus return to last CustomTextFormField and (keyboard shown) 👎

fix:
add focusNode property for each CustomTextFormField and updating the code

Old:

  onTapOutside: (pointDown) {
              FocusScope.of(context).unfocus();
            },

New:

 onTapOutside: (pointDown) {
              focusNode!.unfocus();
            },

After all, I neither use onTap nor onBeforePopupOpening 😄