[JAVA-616] core-java-arrays-operations-advanced

* Creation

* Moved code from https://www.baeldung.com/java-array-copy

* Moved code from https://www.baeldung.com/java-arrays-deepequals

* Moved code from https://www.baeldung.com/java-array-sum-average

* Moved code from https://www.baeldung.com/java-array-intersection

core-java-modules/core-java-arrays-operations-advanced/README.md

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+## Core Java Arrays - Advanced Operations
+
+This module contains articles about advanced operations on arrays in Java
+
+Advanced operations would be much logic or interactions with other arrays, such as:
+
+- Sum, average of elements
+- Intersections
+- ...
+
+### Relevant Articles: 
+- [How to Copy an Array in Java](https://www.baeldung.com/java-array-copy)
+- [Arrays.deepEquals](https://www.baeldung.com/java-arrays-deepequals)
+- [Find Sum and Average in a Java Array](https://www.baeldung.com/java-array-sum-average)
+- [Intersection Between two Integer Arrays](https://www.baeldung.com/java-array-intersection)
+- [[More basic operations-->]](/core-java-modules/core-java-operations-basic)