[app-wiring-refactor]: Apply review comments:

- Add reference to original library in `FluentBuilder`.
- Change `I<Name>` notation to `<Name>Impl` notation.
- Move error config to test resources
- Add comment with config instruction
- Add config to the documentation

Mage.Server/src/main/java/mage/server/util/ThreadExecutorImpl.java

@@ -0,0 +1,94 @@
+package mage.server.util;
+
+import mage.server.managers.ConfigSettings;
+import mage.server.managers.ThreadExecutor;
+
+import java.util.concurrent.*;
+
+/**
+ * @author BetaSteward_at_googlemail.com
+ */
+public class ThreadExecutorImpl implements ThreadExecutor {
+    private final ExecutorService callExecutor;
+    private final ExecutorService gameExecutor;
+    private final ScheduledExecutorService timeoutExecutor;
+    private final ScheduledExecutorService timeoutIdleExecutor;
+
+    /**
+     * noxx: what the settings below do is setting the ability to keep OS
+     * threads for new games for 60 seconds If there is no new game created
+     * within this time period, the thread may be discarded. But anyway if new
+     * game is created later, new OS/java thread will be created for it taking
+     * MaxGameThreads limit into account.
+     * <p>
+     * This all is done for performance reasons as creating new OS threads is
+     * resource consuming process.
+     */
+
+    public ThreadExecutorImpl(ConfigSettings config) {
+        callExecutor = Executors.newCachedThreadPool();
+        gameExecutor = Executors.newFixedThreadPool(config.getMaxGameThreads());
+        timeoutExecutor = Executors.newScheduledThreadPool(4);
+        timeoutIdleExecutor = Executors.newScheduledThreadPool(4);
+
+        ((ThreadPoolExecutor) callExecutor).setKeepAliveTime(60, TimeUnit.SECONDS);
+        ((ThreadPoolExecutor) callExecutor).allowCoreThreadTimeOut(true);
+        ((ThreadPoolExecutor) callExecutor).setThreadFactory(new XMageThreadFactory("CALL"));
+        ((ThreadPoolExecutor) gameExecutor).setKeepAliveTime(60, TimeUnit.SECONDS);
+        ((ThreadPoolExecutor) gameExecutor).allowCoreThreadTimeOut(true);
+        ((ThreadPoolExecutor) gameExecutor).setThreadFactory(new XMageThreadFactory("GAME"));
+        ((ThreadPoolExecutor) timeoutExecutor).setKeepAliveTime(60, TimeUnit.SECONDS);
+        ((ThreadPoolExecutor) timeoutExecutor).allowCoreThreadTimeOut(true);
+        ((ThreadPoolExecutor) timeoutExecutor).setThreadFactory(new XMageThreadFactory("TIMEOUT"));
+        ((ThreadPoolExecutor) timeoutIdleExecutor).setKeepAliveTime(60, TimeUnit.SECONDS);
+        ((ThreadPoolExecutor) timeoutIdleExecutor).allowCoreThreadTimeOut(true);
+        ((ThreadPoolExecutor) timeoutIdleExecutor).setThreadFactory(new XMageThreadFactory("TIMEOUT_IDLE"));
+    }
+
+
+    @Override
+    public int getActiveThreads(ExecutorService executerService) {
+        if (executerService instanceof ThreadPoolExecutor) {
+            return ((ThreadPoolExecutor) executerService).getActiveCount();
+        }
+        return -1;
+    }
+
+    @Override
+    public ExecutorService getCallExecutor() {
+        return callExecutor;
+    }
+
+    @Override
+    public ExecutorService getGameExecutor() {
+        return gameExecutor;
+    }
+
+    @Override
+    public ScheduledExecutorService getTimeoutExecutor() {
+        return timeoutExecutor;
+    }
+
+    @Override
+    public ScheduledExecutorService getTimeoutIdleExecutor() {
+        return timeoutIdleExecutor;
+    }
+
+}
+
+class XMageThreadFactory implements ThreadFactory {
+
+    private final String prefix;
+
+    XMageThreadFactory(String prefix) {
+        this.prefix = prefix;
+    }
+
+    @Override
+    public Thread newThread(Runnable r) {
+        Thread thread = new Thread(r);
+        thread.setName(prefix + ' ' + thread.getThreadGroup().getName() + '-' + thread.getId());
+        return thread;
+    }
+
+}