feat: objects having member functions

[pacifiquem]

We have a way a function can have a member function.

porogaramu_ntoya add(a, b) {
    tanga a + b
}

reka obj = {
    addNumbers: add
}   

tangaza_amakuru(obj.addNumbers(1, 2)) // this will print 3 to the screen

Even though we can declare a function inside an object declaration, we're able to label a function with a key in an object and the function can be called from there.