OpenVAS XML parser should create endpoints

[Whitehorse2]

Is your feature request related to a problem? Please describe

The greenbone/openvas scanner is normally scanning multiple targets at once. It is therefore important that the hosts or endpoints are also extracted correctly. A scan report can contain several IP addresses or, for example, a complete subnet. It is important that the hosts can be differentiated per endpoint, especially if there are several hundred hosts per report.

Describe the solution you'd like
The XML contains the data for host and port. These must be assigned accordingly by the parser.

Additional context
Examples over here: #11695