単純な答えで
<build>
<finalName>ClientSideMaven</finalName>
<plugins>
<plugin>
<groupId>com.zenjava</groupId>
<artifactId>javafx-maven-plugin</artifactId>
<version>8.6.0</version>
<configuration>
<mainClass>com.canon.cel.consoleserverclient.MainApp</mainClass>
</configuration>
<executions>
<execution>
<id>create-jfxjar</id>
<phase>package</phase>
<goals>
<goal>build-jar</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
おかげだ、いけません! Mavenアセンブリプラグインを使用することができます
<plugin>
<artifactId>maven-assembly-plugin</artifactId>
<executions>
<execution>
<id>create-executable</id>
<phase>package</phase>
<goals>
<goal>single</goal>
</goals>
</execution>
</executions>
<configuration>
<outputDirectory>${test.pack.dir}</outputDirectory>
<appendAssemblyId>false</appendAssemblyId>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
<archive>
<manifest>
<mainClass>com.canon.cel.consoleserverclient.MainApp</mainClass>
</manifest>
</archive>
</configuration>
</plugin>