Make ActionDispatcher more easily customizable

- Extract thread creation and initialization out of constructor

plugins/org.eclipse.glsp.server/src/org/eclipse/glsp/server/internal/actions/DefaultActionDispatcher.java

@@ -26,10 +26,9 @@
 import java.util.concurrent.CompletableFuture;
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.atomic.AtomicInteger;
+import java.util.logging.LogManager;
 import java.util.stream.Collectors;
 
-import org.apache.logging.log4j.LogManager;
-import org.apache.logging.log4j.Logger;
 import org.eclipse.glsp.server.actions.Action;
 import org.eclipse.glsp.server.actions.ActionDispatcher;
 import org.eclipse.glsp.server.actions.ActionHandler;
@@ -87,11 +86,23 @@ public class DefaultActionDispatcher extends Disposable implements ActionDispatc
    protected Provider<GLSPClient> client;
 
    public DefaultActionDispatcher() {
+      this.initialize();
+   }
+
+   protected void initialize() {
       this.name = getClass().getSimpleName() + " " + COUNT.incrementAndGet();
-      this.thread = new Thread(this::runThread);
-      this.thread.setName(this.name);
-      this.thread.setDaemon(true);
-      this.thread.start();
+      this.thread = this.createThread();
+      this.initializeThread(thread, name);
+      thread.start();
+   }
+
+   protected Thread createThread() {
+      return new Thread(this::runThread);
+   }
+
+   protected void initializeThread(final Thread thread, final String name) {
+      thread.setName(name);
+      thread.setDaemon(true);
    }
 
    @Override