Some code cleanup and API changes

Common/src/main/java/com/hypherionmc/craterlib/util/ServiceUtil.java

@@ -0,0 +1,27 @@
+package com.hypherionmc.craterlib.util;
+
+import com.hypherionmc.craterlib.CraterConstants;
+
+import java.util.ServiceLoader;
+
+/**
+ * @author HypherionSA
+ * Utility class to handle SPI loading
+ */
+public class ServiceUtil {
+
+    /**
+     * Try to load a service
+     * @param clazz The service class type to load
+     * @return The loaded class
+     */
+    public static <T> T load(Class<T> clazz) {
+
+        final T loadedService = ServiceLoader.load(clazz)
+                .findFirst()
+                .orElseThrow(() -> new NullPointerException("Failed to load service for " + clazz.getName()));
+        CraterConstants.LOG.debug("Loaded {} for service {}", loadedService, clazz);
+        return loadedService;
+    }
+
+}