Handle built-in functions with different signatures

[saig0]

Description

A built-in function can have different argument lists. The argument lists can differ

• in the number of arguments,
• in the types of arguments,
• in the name of arguments

For example: https://camunda.github.io/feel-scala/docs/next/reference/builtin-functions/feel-built-in-functions-conversion#date-and-time

Currently, the FEEL engine doesn't support the function invocation with positional arguments if the function has more than one argument list with the same number of arguments but different types. As a result, it invokes only one of the argument lists independent of the argument types.

Required for #554.