feature: Rewrite thread-local storage pattern (#2452)

thread-local-storage/src/main/java/com/iluwatar/WithoutThreadLocal.java

@@ -0,0 +1,24 @@
+package com.iluwatar;
+
+import java.util.function.Consumer;
+import java.util.function.Supplier;
+import lombok.AllArgsConstructor;
+
+/**
+ * Example of runnable without usage of {@link ThreadLocal}.
+ */
+@AllArgsConstructor
+public class WithoutThreadLocal extends AbstractThreadLocalExample {
+
+  private Integer value;
+
+  @Override
+  protected Consumer<Integer> setter() {
+    return integer -> value = integer;
+  }
+
+  @Override
+  protected Supplier<Integer> getter() {
+    return () -> value;
+  }
+}