Repair license header settings

[sjahreis]

Describe the bug
License headers are not checked in frontend/src directory. Furthermore the license header's content isn't checked against the configured settings (like inception year)

Expected behavior

• The license headers for files in frontend/src directory are checked.
• The license header's content is checked.

Fix
Already fixed using the following snippet:

<!-- LICENSE -->
            <plugin>
                <groupId>org.codehaus.mojo</groupId>
                <artifactId>license-maven-plugin</artifactId>
                <version>2.0.0</version>
                <configuration>
                    <licenseName>apache_v2</licenseName>
                    <licenseFile>${project.basedir}/LICENSE</licenseFile>
                    <inceptionYear>${project.inceptionYear}</inceptionYear>
                    <projectName>${project.artifactId}</projectName>
                    <copyrightOwners>linked-planet GmbH</copyrightOwners>
                    <failOnMissingHeader>true</failOnMissingHeader>
                    <failOnNotUptodateHeader>true</failOnNotUptodateHeader>
                    <roots>
                        <root>src</root>
                        <root>target/generated-sources</root>
                        <root>frontend/src</root>
                    </roots>
                    <excludes>
                        <exclude>**/*.min.js</exclude>
                        <exclude>**/*.js</exclude>
                        <exclude>**/plugin*.properties</exclude>
                        <exclude>**/version*.properties</exclude>
                        <exclude>**/log4j.properties</exclude>
                        <exclude>**/kaptKotlin/**/*</exclude>
                    </excludes>
                    <excludedScopes>provided,test</excludedScopes>
                </configuration>
                <executions>
                    <execution>
                        <id>license-check-file-header</id>
                        <phase>validate</phase>
                        <goals>
                            <goal>check-file-header</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>

[weickmanna]

@sjahreis I just released a new version 3.3.0.
I didn't add target/generated-sources ... maybe you still want to add it if you need it?
Also, I needed to exclude the frontend Application.kt file because the license plugin added the header in a wrong location due to some redux code it cannot deal with.

[sjahreis]

@weickmanna That already happened in some of my files as well. You can manually fix the position of the license header and it will be accepted that way by the plugin.