Move models and add DTOs

pom.xml

@@ -15,6 +15,7 @@
     <description>banking-service</description>
     <properties>
         <java.version>17</java.version>
+        <modelmapper.version>3.1.1</modelmapper.version>
     </properties>
     <dependencies>
         <dependency>
@@ -29,6 +30,15 @@
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-web</artifactId>
         </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-validation</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.modelmapper</groupId>
+            <artifactId>modelmapper</artifactId>
+            <version>${modelmapper.version}</version>
+        </dependency>
 
         <dependency>
             <groupId>org.springframework.boot</groupId>