This pull request adds a custom header builder function to the package, which allows users to build their own header component. The header builder function provides users with three values - previousMonth, nextMonth, and headerTitle - that they can use to customize their header component.
Header builder definition:
Header builder provides you with three values,
Function previousMonth => when calling this function it moves back one month
Function nextMonth => when calling this function it moves forward one month
String headerTitle => it provides you with a header title example: Mar 2023
Title: Added Custom Header Builder Functionality
Description:
This pull request adds a custom header builder function to the package, which allows users to build their own header component. The header builder function provides users with three values - previousMonth, nextMonth, and headerTitle - that they can use to customize their header component.
Header builder definition: Header builder provides you with three values, Function previousMonth => when calling this function it moves back one month Function nextMonth => when calling this function it moves forward one month String headerTitle => it provides you with a header title example: Mar 2023
Example:![Screenshot 2023-03-30 at 13 15 23](https://user-images.githubusercontent.com/43991798/228819336-042df136-2db7-4a47-9b41-d84f0c594831.png)
Outcome:![Screenshot 2023-03-30 at 13 08 46](https://user-images.githubusercontent.com/43991798/228817802-5693a473-fb77-4aa1-8a06-524cc8778302.png)