nefc should be less verbose

[miguelangel-dev]

nefc should be less verbose in output.

NEFC has 3 steps of compilation:

1. build external dependencies using cocoapods
2. build project
3. build playgrounds pages

Step 3 is console user-friendly and generate logs with the outputs - in steps 1 and 2 nef should do the same

[truizlop]

Should we add a flag in case people want the verbose option to debug for problems? If so, another issue needs to be created.

[miguelangel-dev]

In fact, it was my first idea. Add a flag like -v to activate this mode but in the end, I am dumping this output to logs files so you can check them always - nef/log - in the console you will receive simple information about what happens and in the log the whole information.

[truizlop]

Let's open another issue since that is kind of a new feature.