Support for Spring annotations via kie-spring

**Annotations to inject kie objects into spring beans**

```java
@KSession("ksession2")
KieSession statefulSession;

@KBase("drl_kiesample3")
KieBase kieBase;
```

**kie-spring now supports component-scan**

previously
```xml
<bean id="kiePostProcessor" class="org.kie.spring.KModuleBeanFactoryPostProcessor"/>
```
now, could also do
```xml
<context:component-scan base-package="org.kie.spring"/>
```