printf-style formatting in block names

[corporateshark]

Support printf-style formatting as follows:

EASY_BLOCK_FORMATTED("Frame: %i", profiler::colors::Red, i);

[yse]

@corporateshark thanks for suggestion. I think with issue not so difficult. I've created branch for making some test and discussion (for example, about status of block as optional parameter)

And I think color will be more clear as first parameter of macros instead of misleading argument for printf-style format-string