utility: Added ConsoleLogger

Adds the class ConsoleLogger, which logs LogMessages to std::cout. The
Application class creates and registers a ConsoleLogger on creation.

Output format:
<time> | <filename>:<line> <function>() | <type>: <message>

Example:
12:58:18 | Application.cpp:21 create() | INFO: hello world!
12:58:18 | Application.cpp:22 create() | WARNING: attention world!
12:58:18 | Application.cpp:23 create() | ERROR: world failed

review=4
reviewer=stalli, malte

src/lib/utility/logging/ConsoleLogger.h

@@ -0,0 +1,21 @@
+#ifndef CONSOLE_LOGGER_H
+#define CONSOLE_LOGGER_H
+
+#include "utility/logging/Logger.h"
+#include "utility/logging/LogMessage.h"
+
+class ConsoleLogger: public Logger
+{
+public:
+	ConsoleLogger();
+	~ConsoleLogger();
+
+	virtual void logInfo(const LogMessage& message);
+	virtual void logWarning(const LogMessage& message);
+	virtual void logError(const LogMessage& message);
+
+private:
+	void logMessage(const std::string& type, const LogMessage& message);
+};
+
+#endif // CONSOLE_LOGGER_H