Add isInThePast and isInTheFuture to LocalDate assertions

[StefanBratanov]

Check List:

• Fixes one of the tasks in Consider adding isPast() and isFuture() methods for asserting dates #2932
• Unit tests : YES
• Javadoc with a code example (on API only) : YES
• PR meets the contributing guidelines

Two things I am unsure about:

• The correctness of the @since version
• ShouldBeInTheFuture/ThePast error message contains the class name (java.time.LocalDate). This seems to be the behaviour of the MessageFormatter handling dates classes. Is the error message ok like this?

[joel-costigliola]

Integrated thanks @StefanBratanov for the good work!
I did some minor changes before integrating it

• no need to use @DisplayName this is now done automatically with a junit custom test naming config
• updated the javadoc as the example for isInTheFutture was not that nice (came from date assertions that I also updated)

[StefanBratanov]

Integrated thanks @StefanBratanov for the good work! I did some minor changes before integrating it

• no need to use @DisplayName this is now done automatically with a junit custom test naming config
• updated the javadoc as the example for isInTheFutture was not that nice (came from date assertions that I also updated)

Thank you @joel-costigliola . Will keep in mind for any future contributions. :)