Cijoe

* fixes...

* mod/qemu: re-done to align with the NVMe/OCSSD support in `refenv/qemu`

* hooks/sysinf: added collection of kernel config

* `bin/cij_runner`: added primitive interrupt handler
* hooks: fixed invalid error-messaging
* testcases/tlint: fixed description

* mod/fio: fixed showcmd for remote fio
* hooks/pblk: added comment on requirements
* docs: added placeholder for descr. of packages
* selftest: changed messaging on error to reduce confusion
* build: changed messaging on error to reduce confusion
* `bin/cij_tlint`: fixed missing use-of-nonexistant check

* selftest: fixed warning-message
* mod/qemu: fixed return of 'qemu::is_running' and added 'qemu::wait'
* mod/qemu: exported path to NVMe/OCSSD device via QEMU_NVME_IMAGE_FPATH