Add a Spring Boot example and integration code.

Change-Id: Ia11dea607c74d9b4cc9a698e9ec92e930bd03f37
diff --git a/core/src/main/java/eu/mulk/quarkus/googlecloud/jsonlogging/logmanager/DefaultEmbeddedConfigurator.java b/core/src/main/java/eu/mulk/quarkus/googlecloud/jsonlogging/logmanager/DefaultEmbeddedConfigurator.java
new file mode 100644
index 0000000..8d9d4d8
--- /dev/null
+++ b/core/src/main/java/eu/mulk/quarkus/googlecloud/jsonlogging/logmanager/DefaultEmbeddedConfigurator.java
@@ -0,0 +1,46 @@
+package eu.mulk.quarkus.googlecloud.jsonlogging.logmanager;
+
+import eu.mulk.quarkus.googlecloud.jsonlogging.Formatter;
+import java.util.logging.Handler;
+import org.jboss.logmanager.EmbeddedConfigurator;
+import org.jboss.logmanager.handlers.ConsoleHandler;
+
+/**
+ * A convenient {@link EmbeddedConfigurator} for JBoss Log Manager.
+ *
+ * <p>You can register this class through the {@link java.util.ServiceLoader} mechanism as a
+ * provider of the {@link EmbeddedConfigurator} interface (under the name of {@code
+ * org.jboss.logmanager.EmbeddedConfigurator}) to automatically register a {@link ConsoleHandler}
+ * using {@link Formatter} as the default log output method for the application.
+ */
+public final class DefaultEmbeddedConfigurator implements EmbeddedConfigurator {
+
+  private final Handler[] rootHandlers;
+
+  /**
+   * Constructs a JBoss Log Manager configuration that uses {@link Formatter} and {@link
+   * ConsoleHandler} for log output.
+   */
+  @SuppressWarnings("java:S2095")
+  public DefaultEmbeddedConfigurator() {
+    rootHandlers = new Handler[] {createConsoleHandler()};
+  }
+
+  /**
+   * Creates a {@link ConsoleHandler} that uses {@link Formatter} for formatting.
+   *
+   * @return a preconfigured {@link ConsoleHandler}.
+   */
+  public static ConsoleHandler createConsoleHandler() {
+    return new DefaultConsoleHandler();
+  }
+
+  @Override
+  public Handler[] getHandlersOf(String loggerName) {
+    if (loggerName.isEmpty()) {
+      return rootHandlers;
+    } else {
+      return EmbeddedConfigurator.NO_HANDLERS;
+    }
+  }
+}