Epic: Implement OpenShift Serverless Functions workflow in OpenShift Toolkit for IntelliJ

[sbouchet]

Implement the OpenShift Serverless below features into OpenShift Toolkit extension for IntelliJ.

• [ ] #932
• [ ] Update to latest func cli https://github.com/knative/func
• [ ] Implement create action
• [ ] Implement build action
• [ ] Implement run action
• [ ] Implement deploy action
• [ ] Implement invoke action

[adietish]

According to @mohitsuman's plan we should priotize #924 which seems more urgent for now