Fix backend run config

pom.xml

@@ -116,6 +116,16 @@
                 <artifactId>exec-maven-plugin</artifactId>
                 <version>3.1.0</version>
                 <executions>
+                    <execution>
+                        <id>dev-stack</id>
+                        <goals>
+                            <goal>java</goal>
+                        </goals>
+                        <configuration>
+                            <mainClass>com.petshop.backend.DevStackApplication</mainClass>
+                            <classpathScope>runtime</classpathScope>
+                        </configuration>
+                    </execution>
                     <execution>
                         <id>docker-up</id>
                         <goals>