Add profiler

[kvdz]

I would like to see, the time passed for each function. And how many times that function has called.

You already have a stack trace. You can see when a new function starts and when it ends. This time can be very helpfull in big project to improve the speed of functions. How many times the function is called helps the developer to improve on heavy function. To increase runtime speed.

There are profilers for c++ c# i have tried one for c on a vala project but it didn't give me the info needed. It was just a dump of things which didn't make sense.