Add an option for not including generated sources into compilation stage

[onacit]

Sometimes an XJC-ed module would like to deploy two separate classified artifacts for javax and jakarta.

    <profile>
      <id>javax</id>
      <activation>
        <activeByDefault>true</activeByDefault>
      </activation>
      <build>
        <plugins>
          <plugin>
            <groupId>org.codehaus.mojo</groupId>
            <artifactId>jaxb2-maven-plugin</artifactId>
            <version>2.5.0</version>
            <executions>
              <execution>
                <id>xjc</id>
                <goals>
                  <goal>xjc</goal>
                </goals>
              </execution>
            </executions>
          </plugin>
        </plugins>
      </build>
    </profile>
    <profile>
      <id>jakarta</id>
      <activation>
<!--        <activeByDefault>true</activeByDefault>-->
      </activation>
      <dependencies>
        <dependency>
          <groupId>jakarta.xml.bind</groupId>
          <artifactId>jakarta.xml.bind-api</artifactId>
          <scope>provided</scope>
        </dependency>
      </dependencies>
      <build>
        <plugins>
          <plugin>
            <groupId>org.codehaus.mojo</groupId>
            <artifactId>jaxb2-maven-plugin</artifactId>
            <version>3.1.0</version>
            <executions>
              <execution>
                <id>xjc</id>
                <goals>
                  <goal>xjc</goal>
                </goals>
                <configuration>
                  <outputDirectory>${project.build.directory}/generated-sources/jaxb-jakarta</outputDirectory>
                </configuration>
              </execution>
            </executions>
          </plugin>
        </plugins>
      </build>
    </profile>

Please add an option for not including generated sources to compilation stage.