[NEW] net/libiscsi: Client-side library to implement the iSCSI protocol

Libiscsi is a client-side library to implement the iSCSI protocol
that can be used to access the resources of an iSCSI target.

The library is fully asynchronous with regards to iSCSI commands
and SCSI tasks, but a synchronous layer is also provided for ease
of use for simpler applications.

WWW: https://github.com/sahlberg/libiscsi

PR: 217355
Submitted by: d8zNeCFG@aon.at