feat: single command embedding

[algomaster99]

Running from command line is not a great idea since you cannot control which phase to attach the plugin to. This is a major change and we propose to add this to pom file now:

  <plugin>
    <groupId>io.github.project</groupId>
    <artifactId>classport-maven-plugin</artifactId>
    <version>0.1.0-SNAPSHOT</version>
    <executions>
        <execution>
            <goals>
                <goal>embed</goal>
            </goals>
        </execution>
    </executions>
</plugin>

By default, it will run during process-classes so after compilation and before packaging - making it the best step to run.