Reporter configuration

[Duhemm]

Currently, it supports only 2 configuration options:

• colors, which controls whether the reporter should use colors to emphasize some parts of the error report.
• shortenPaths, which controls whether the reporter will relativize file paths to the current working directory.

The configuration for the reporter can be set like this:

reporterConfig in (Compile, compile) := ReporterConfig(colors = false, shortenPaths = false)
reporterConfig in (Test, compile) := ReporterConfig(colors = true, shortenPaths = true)

This would result in different reporter configurations used to compile the main and test targets.