Use consistent terminology in gRPC frontend and workflow processing logic in frontend/common, for workflow events
The same functionalities have different names, for example Archive/CLOSEW, Retrieve/PREPARE, Cancel/ABORT, which is confusing:
| gRPC method | common method |
|---|---|
| CtaRpcImpl::Create() | processCREATE() |
| CtaRpcImpl::Archive() | processCLOSEW() |
| CtaRpcImpl::Delete() | processDELETE() |
| CtaRpcImpl::Retrieve() | processPREPARE() |
| CtaRpcImpl::CancelRetrieve | processABORT_PREPARE() |