Full rewrite of all formatters. Create a minimal JSON, a full JSON, and a fallback RSpec formatter. The latter is only needed for corner cases and should not really be used. The former 2 are for (1) running `inspec json` followed by `inspec exec` (`--format json`) and (2) running just `inspec exec --format fulljson`.
Instead of just removing all tests because of OS support, supports now acts by adding all tests to the execution context, but doesnt actually execute them. Instead tests are set to skip before they get to the actual execution context
