Adapt methods to enable full range absolute time for timer object

[lefebvresam]

In timer.h some methods are defined to return the absolute time for a timer object. Some of them are depreciated becasue they do not return a data type within the full range:

Note: INFO macro expands to a printf

Timer int_t;
int_t.start();

INFO("Timer: %u ms", int_t.read_ms()); // depreciated
// is implemented as:
INFO("Timer: %u ms", std::chrono::duration_cast<std::chrono::duration<int, std::milli>>(int_t.elapsed_time()).count()); // depreciated

As decribed in time.h there are better options, but not yet incorporated in the code:

INFO("Timer: %llu ms", std::chrono::duration_cast<std::chrono::milliseconds>(int_t.elapsed_time()).count()); // 64bit value
INFO("Timer: %llu us", static_cast<long long int>(int_t.elapsed_time().count())); //64bit value

2^64
1,84467E+19	us
1,84467E+16	ms
1,84467E+13	s
3,07446E+11	min
5124095576	h
213503982,3	d
584554,531	y

[multiplemonomials]

You're right, I think that this should be changed to use a 64 bit type. std::chrono::duration_cast<std::chrono::milliseconds>(int_t.elapsed_time()).count() is the correct std::chrono way to do it.