Support for Array and Map unpacking

[its-darsh]

We need to be able to unpack arrays and maps (like Python for example), Syntax wise it might look like *[] and **{}

Unpacking mostly will be used to pass arguments and keyword arguments to functions from an array / map

Example:

my_func = fn (x, y) {
    println(x, y)
}

my_func(*[1, 2]) # -> 1 2
my_func(**{"x": 42, "y": 4002}) # -> 42 4002

Also, returning multiple values will return the values packed inside an array

my_func = fn () {
    return 42, 4002
}

println(my_func()) # -> [42, 4002]
println(*(my_func())) # -> 42, 4002 (after unpack)