feat(demo): add AppShellConfiguratorImpl

Author: javier-godoy

pom.xml

@@ -167,6 +167,7 @@
             <licenseName>apache_v2</licenseName>
             <addJavaLicenseAfterPackage>false</addJavaLicenseAfterPackage>
               <excludes>
+                <exclude>**/AppShellConfiguratorImpl.class</exclude>
                 <exclude>**/main/resources/META-INF/resources/frontend/prism.js</exclude>
                 <exclude>**/main/resources/META-INF/resources/frontend/prism.css</exclude>
                 <exclude>**/test/resources/**</exclude>

src/test/java/com/flowingcode/vaadin/addons/demo/AppShellConfiguratorImpl.java

@@ -0,0 +1,9 @@
+package com.flowingcode.vaadin.addons.demo;
+
+import com.vaadin.flow.component.page.AppShellConfigurator;
+import com.vaadin.flow.theme.Theme;
+
+@Theme
+public class AppShellConfiguratorImpl implements AppShellConfigurator {
+
+}