[JAVA-630] vavr-2 module

* Creation

* Moved https://www.baeldung.com/vavr-either code

* Moved https://www.baeldung.com/java-vavr code

vavr/src/main/java/com/baeldung/vavr/either/EitherDemo.java

@@ -1,37 +0,0 @@
-package com.baeldung.vavr.either;
-
-import java.util.HashMap;
-import java.util.Map;
-
-import io.vavr.control.Either;
-
-public class EitherDemo {
-
-	public static Object[] computeWithoutEitherUsingArray(int marks) {
-		Object[] results = new Object[2];
-		if (marks < 85) {
-			results[0] = "Marks not acceptable";
-		} else {
-			results[1] = marks;
-		}
-		return results;
-	}
-
-	public static Map<String, Object> computeWithoutEitherUsingMap(int marks) {
-		Map<String, Object> results = new HashMap<>();
-		if (marks < 85) {
-			results.put("FAILURE", "Marks not acceptable");
-		} else {
-			results.put("SUCCESS", marks);
-		}
-		return results;
-	}
-
-	static Either<String, Integer> computeWithEither(int marks) {
-		if (marks < 85) {
-			return Either.left("Marks not acceptable");
-		} else {
-			return Either.right(marks);
-		}
-	}
-}