Flowable Spring Boot Starter Rest .zip file deployment

**Describe the bug**
I have an application that uses Flowable’s Spring Boot Starter Rest.

[pom.xml](https://github.com/Robinyo/serendipity-api/tree/master/projects/spring-boot):
```
...

org.flowable
flowable-spring-boot-starter-rest
${flowable.version}

org.flowable
flowable-ldap
${flowable.version}

...

```

If I place a **.zip** file in the default location (i.e., /resources/apps) the processes are successfully deployed. However, the associated forms are not deployed.

If I place a **.bpmn** file in the default location (i.e., /resources/processes) and the associated forms (**.json)** in the default location (i.e., /resources/forms). The processes are successfully deployed, however, the associated forms are not deployed.

**Expected behaviour**
That the processes and the associated forms are deployed.

Ref: [Flowable Spring Boot Starter .zip file deployment](https://forum.flowable.org/t/flowable-spring-boot-starter-zip-file-deployment/6483)

Beginne mit der verknüpften pom.xml und reproduziere die Bereitstellung mit einer .zip-Datei in /resources/apps; vergleiche sie anschließend mit einer .bpmn-Datei in /resources/processes und .json-Formularen in /resources/forms. Verfolge den Einstiegspunkt für die Bereitstellung von Spring Boot Starter REST und verifiziere, dass sowohl der Prozess als auch seine zugehörigen Formulare bereitgestellt werden.

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