Provide options to make FastlaneCore::Project print less output

[mfurtak]

These new options are all off by default. Their goal is to allow use of the FastlaneCore::Project class during interactive user flows where the current noisy logging obscures the messages we want them to see.

fastlane will attempt to detect your project settings in this directory
xcodebuild -list -project ./SingleView.xcodeproj
2016-07-25 10:47:21.074 xcodebuild[9236:45189] [MT] PluginLoading: Required plug-in compatibility UUID ACA8656B-FEA8-4B6D-8E4A-93F4C95C362C for plug-in at path '~/Library/Application Support/Developer/Shared/Xcode/Plug-ins/FixCode.xcplugin' not present in DVTPlugInCompatibilityUUIDs
2016-07-25 10:47:21.477 xcodebuild[9240:45243] [MT] PluginLoading: Required plug-in compatibility UUID ACA8656B-FEA8-4B6D-8E4A-93F4C95C362C for plug-in at path '~/Library/Application Support/Developer/Shared/Xcode/Plug-ins/FixCode.xcplugin' not present in DVTPlugInCompatibilityUUIDs
fastlane will now try to discover Beta by Crashlytics info from your project.

With these changes, we can suppress both the warnings and the xcodebuild -list command printing, to get:

fastlane will attempt to detect your project settings in this directory
fastlane will now try to discover Beta by Crashlytics info from your project

[asfalcone]

LGTM. 🚀 when CI is 💚