Timeline view of a build

Hi,

I created a new command for this plugin which export a view of the maven build as a html page. An highlight system for dependencies is implemented in the HTML page, but datas are not filled yet. It's the next step of my development !

This command can be activated by using this profile :
```xml
<profile>
   <id>timeline</id>
   <properties>
      <maven-build-utils.activate-timeline>true</maven-build-utils.activate-timeline>
   </properties>
</profile>
```