BAEL-4165 - Custom DLL Load - Fixing the "java.lang.UnsatisfiedLinkError" Error (#14393)

* first draft

* review 1

* review 1 - test setup

java-native/src/main/java/com/baeldung/unsatisfiedlink/JniUnsatisfiedLink.java

@@ -0,0 +1,15 @@
+package com.baeldung.unsatisfiedlink;
+
+public class JniUnsatisfiedLink {
+
+    public static final String LIB_NAME = "test";
+
+    public static void main(String[] args) {
+        System.loadLibrary(LIB_NAME);
+        new JniUnsatisfiedLink().test();
+    }
+
+    public native String test();
+
+    public native String nonexistentDllMethod();
+}