feat(disable): allow week days to be removed from selection

[arcifius]

Allowing Weekdays to Be Disabled from Selection

Sometimes we'll want to prevent users from selecting specific weekdays, for example, weekend days. By using disabledDays, we can disable specific days based on any external rules.

It seems to be a useful feature, so I wanted to open this PR. If it makes sense, feel free to merge 🙌🏼 I appreciate your time in developing this cross-platform library. Keep up the great work!

If something is not good, I'm also open to adjusting it so we can merge the feature 👍🏼

Demo ( disabled Saturday & Sunday )