Include simple profiler and possibly LuaJIT support

[S-S-X]

Tested LuaJIT builtin high level profiler with Mineunit, very simple and might still be able to provide some useful data.

Something like this could be added to Mineunit, LuaJIT profiler of course only works when LuaJIT is used and Luarocks packages do not support LuaJIT very well. Why I like this profiler is simply because it is 2 function calls and nothing else: start and stop, would be just CLI/config flag to enable/disable it.

Mineunit itself however could probably manage this with few dirty hacks...