Implement permanent agent

[judovana]

as current agent have also its benefits, it would be nice if this behaviour woudl be configurable through agent arguments.

[judovana]

Was thinkng about this a bit.

• we have to do agent uniq per vm. Another instance must be prohibited
  • same approach as bytmenas proeprty shoud be used
• i thik it still have sense to keep single usage agent
• for the pernament agents, a config file of vmID port must be ketp in user space
• gui msut be able to visualise this file (and offer some disconnect button)
  • gui shoudl offer the checbox pernament/temporary agent
• cli ust be able to visualise it
  • cli must be able to install/uninstall agent
• and option to clean up remainng agents should be included

implementation itself

• if agent is about to be attached, it first check if there is already an known connection in the file
• if so, then it reuses that
• if not, then it creates new one. If the connectionshoudl be pernament, mark itsel fin file

Once vm is changed, or cli ends, then all non-pernament agents have to be detahced and closed. On contrary, all pernament should be jsut disconnected.

[judovana]

maybe the penament agent shoudl be default in gui (with question about disconnecting onclose). Cli will need switch pernament/temoral whweere efault is temporal for all read operations, and pernament is default for all write operations

[judovana]

#218

[judovana]

the pernament agent is now done. muc more work is needed for other types of agents

[judovana]

Finishec