feat(takeWhile): add an inclusive option to the operator which caus…

…es to emit final value

By default, the value that causes the predicate to return `false` is not emitted.

This change adds an `inclusive` option which changes the behavior of the operator to include the final value which made the predicate return `false`.
Typical use case: Polling an API until the response contains a certain value, and then doing something with the response.