add support in drools-spring for defining an environment (org.drools.runtime.Environment)

<drools:environment id="...">

<drools:entity-manager-factory ref=".."/>
<drools:transaction-manager ref=".."/>
<drools:globals ref=".."/>

<drools:object-marshalling-strategies>
...
</drools:object-marshalling-strategies>

<drools:scoped-entity-manager scope="app|cmd" ref="...f"/>

</drools:environment>