Implement all queries.

[PanekOndrej]

Fixes:

• convert loglevel input to uppercase in logging.create_logger()
• minor fixes in tests

New:

• queries from fork were implemented, tests included:

  • get_actor_state
  • get_actor_status_info

• remaining queries were implemented, tests included:

  • get_actor_supports
  • get_full_project_status_info
  • get_full_project_tree
  • get_hpc_licensing_forwarded_environment
  • get_input_slot_value
  • get_output_slot_value
  • get_project_tree_systems
  • get_project_tree_systems_with_properties
  • get_server_is_alive
  • get_systems_status_info

• Since this is not directly accessible nor meant to be used by common user, there are no input type checks