Add Main class for game engine initialization and remove BootstrapTest

src/main/java/de/extio/game_engine/Main.java

@@ -0,0 +1,70 @@
+package de.extio.game_engine;
+
+import java.util.function.Consumer;
+import java.util.logging.ConsoleHandler;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.boot.builder.SpringApplicationBuilder;
+import org.springframework.context.ApplicationListener;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Condition;
+import org.springframework.context.annotation.ConditionContext;
+import org.springframework.context.annotation.Conditional;
+import org.springframework.context.event.ContextClosedEvent;
+import org.springframework.core.type.AnnotatedTypeMetadata;
+
+@SpringBootApplication
+@EnableAutoConfiguration
+@ComponentScan
+public class Main {
+	
+	public static void main(final String[] args) {
+		System.setProperty("game-engine.env", "standalone");
+
+		// final Logger rootLogger = Logger.getLogger("");
+		// rootLogger.setLevel(Level.ALL);
+		// final ConsoleHandler consoleHandler = new ConsoleHandler();
+		// consoleHandler.setLevel(Level.ALL);
+		// final Logger logger = Logger.getLogger("java.awt.event.Component");
+		// logger.setLevel(Level.ALL);
+		// logger.setUseParentHandlers(false);
+		// logger.addHandler(consoleHandler);
+
+		// SpringApplication.run(Main.class, args);
+		final SpringApplicationBuilder builder = new SpringApplicationBuilder(Main.class);
+		builder.headless(false);
+		builder.properties("logging.level.de.extio=TRACE");
+		builder.run(args);
+	}
+	
+	@Bean(name = "gameEngineEventConsumer")
+	@Conditional(StandaloneEnvCondition.class)
+	public Consumer<Object> eventConsumer() {
+		return event -> {
+		};
+	}
+	
+	// @Bean
+	// @Conditional(StandaloneEnvCondition.class)
+	// public ApplicationListener<ContextClosedEvent> shutdownListener() {
+	// 	return event -> {
+	// 		System.exit(0);
+	// 	};
+	// }
+	
+	static class StandaloneEnvCondition implements Condition {
+		
+		public StandaloneEnvCondition() {
+		}
+
+		@Override
+		public boolean matches(final ConditionContext context, final AnnotatedTypeMetadata metadata) {
+			final String env = System.getProperty("game-engine.env", "prod");
+			return "standalone".equalsIgnoreCase(env);
+		}
+	}
+}