packagekit: Set interactive status on PkClient wherever it’s used

In the same way the background state and cache age are set. Note that the background state was previously perhaps a little confused with the interactive state. The background state indicates that an operation should be allocated few system resources, as it’s not urgent. The interactive state indicates that the user explicitly requested an operation, and hence can be presented with polkit prompts (for example) when necessary.

Ideally the packagekit-glib2 API would take this as a flag on each operation, but instead it has to be set on the PkClient. This is translated into a transaction hint whenever the PkClient creates a new D-Bus proxy (which happens at the start of each operation).

Ideally also the internal gnome-software API would provide this as a per-operation flag, but instead it’s set as per-plugin data (and sometimes updated). Perhaps we can improve that in the future when it’s not 1am on a Saturday morning.

Signed-off-by: Philip Withnall pwithnall@endlessos.org

Closes: #582 (closed)