adding the "between" specification to make queries easier

[henriquediascampos]

Recently, I noticed the absence of a Predicate specification that tests whether a given literal value v is between two dynamic expressions x and y.

In a real-world scenario, I encountered this need while checking if a specific date fell between two values stored in the database. At the time, I worked around this by combining "greater than" and "less than" conditions to achieve the desired result. However, wouldn't it be much cleaner and less verbose if we could express this condition directly in a clearer way?

This addition introduces a new between method that improves query readability and conciseness. I believe this enhancement would make the API more intuitive for developers who encounter similar use cases.

(This is my first contribution; please let me know if I missed any steps or if further adjustments are needed. I appreciate your feedback!)