Multiline function calling

[Efnilite]

Problem

Due to Skript's nature of having one statement per line, calling functions with many arguments may lead to unreadable long lines when specifying function arguments.

Solution

Adds a new SectionExpression for calling a function while specifying one argument per line. Every line sets a specific argument and is separated by set to to indicate that parameter x has value y.

set {_transformation} to function transformation with arguments:
    x set to vector(0, 0, 0)
    y set to vector(1, 1.5, 1)
    angle set to axisAngle(45, vector(2, 2, 2)
    axis set to {_axis}

Testing Completed

Added ExprSecFunction.sk tests.

Supporting Information

This PR uses code from the function package rework PR (#8112), and thus can only be merged once that has been merged.

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Completes: #7924
Related: none

[sovdeeth]

What do you think about opening up the section so that it's a normal section, and we just use set {_arg} to value? It wouldn't be quite so nice grammatically, but it would be more consistent in using the normal set effect, and give some more flexibility in assigning params.

[Efnilite]

What do you think about opening up the section so that it's a normal section, and we just use set {_arg} to value? It wouldn't be quite so nice grammatically, but it would be more consistent in using the normal set effect, and give some more flexibility in assigning params.

sounds good, would using variables here be ideal though? what do you think about using something like set argument "x" to value? imo it makes it more apparent you're setting the argument for the function. exact syntax is open to discussion ofc