An enhanced logger

**Enhancement**
The logger at the moment is very verbose on info, especially on larger projects. It might be nice if we have a rethink on what information is crucial to display for example:

* is displaying the sourcemap files neccessary (we can perhaps just display `+ map` to the side of the actual file)
* do we need to display anything from `runtime` at all?

It would be nice to give more information on things we do during the build for example:

* show information on what flags have been enabled via the .dojorc or command line
* display status of pages visited as part of build time rendering
* display blocks being executed as part of build time rendering
* display what and why we code split for