Bael 2189: Convert Byte Array To/From hex String (#5396)

* BAEL-2159: Mini Article on "Separate double into integer and decimal parts"

* BAEL-2189: Tutorial to convert Byte Array to/from hex String.

* BEAL-2189: Code review comments incorporated.

* 1. Added validations for Non-Hex String characters in hex String.
2. Moved classes to algorithms module.
3. Renamed unit test class name ends with *UnitTest.

* 1. Added validations for Non-Hex String characters in hex String.
2. Moved classes to algorithms module.
3. Renamed unit test class name ends with *UnitTest.

* removed: redundant property added for local testing.

algorithms/pom.xml

@@ -17,6 +17,11 @@
             <artifactId>commons-math3</artifactId>
             <version>${commons-math3.version}</version>
         </dependency>
+        <dependency>
+            <groupId>commons-codec</groupId>
+            <artifactId>commons-codec</artifactId>
+            <version>${commons-codec.version}</version>
+        </dependency>
         <dependency>
             <groupId>org.projectlombok</groupId>
             <artifactId>lombok</artifactId>
@@ -85,6 +90,7 @@
         <io.jenetics.version>3.7.0</io.jenetics.version>
         <org.jgrapht.core.version>1.0.1</org.jgrapht.core.version>
         <org.assertj.core.version>3.9.0</org.assertj.core.version>
+        <commons-codec.version>1.11</commons-codec.version>
     </properties>
 
 </project>