Prevent Index Out-Of-Bounds in Function Call With Empty Args

[rcosta358]

This PR is related to #86. Instead of adding this as default argument when none are provided, we throw a ParsingException with the appropriate message instead of failing with index out-of-bounds later on.

Before:

Index 0 out of bounds for length 0

After:

Syntax error with message
Function call cannot have empty arguments
Found in refinement:
size() > 0
In:
@liquidjava.specification.StateRefinement(from = "size() > 0")
void testMethod() {
}

[CatarinaGamboa]

small change

[CatarinaGamboa]

maybe we can change to "Invocation" or "Alias or State" instead of "Function call" since that is an internal name we use and the user should receive a message with something from their context