Add attribute to set IgnorePointer false on textSkip

[ybbond]

Summary

Currently, the Text(widget.textSkip, ...) is hidden with the usage of IgnorePointer.

ref: https://github.com/RafaelBarbosatec/tutorial_coach_mark/blob/d3089dc97a459a48598d931890aa844177278ea4/lib/src/widgets/tutorial_coach_mark_widget.dart#L205-L231

This results in difficulties on testing purpose. Previously, I can use flutter_driver and search value of textSkip to trigger tap on it.

Expected Behavior

Add attribute bool? ignoringSkip = true to TutorialCoachMarkWidget that let developer un-ignore the textSkip

[ybbond]

currently there is workaround with flutter_driver by looking for the ancestor of IgnorePointer which type is InkWell, which is the descendant of TutorialCoachMarkWidget:

  static final coachmarkOkeChildren = find.ancestor(of: find.byType('IgnorePointer'), matching: find.byType('InkWell'));
  static final coachmarkOke = find.descendant(of: find.byType('TutorialCoachMarkWidget'), matching: coachmarkOkeChildren);

but if the attribute ignoringSkip added, this workaround can be omitted and we can just use the previous way:

  static final coachmarkOke = find.text('SKIP');