Change project structure to a Maven Java project + Refactor (#2816)

src/main/java/com/thealgorithms/devutils/searches/SearchAlgorithm.java

@@ -0,0 +1,17 @@
+package com.thealgorithms.devutils.searches;
+
+/**
+ * The common interface of most searching algorithms
+ *
+ * @author Podshivalov Nikita (https://github.com/nikitap492)
+ */
+public interface SearchAlgorithm {
+
+    /**
+     * @param key is an element which should be found
+     * @param array is an array where the element should be found
+     * @param <T> Comparable type
+     * @return first found index of the element
+     */
+    <T extends Comparable<T>> int find(T array[], T key);
+}