Steadily removing D-Bus

[veracioux]

@borgmanJeremy @mmahmoudian I have started working on removing D-Bus (where possible/desirable) and I'll submit a PR fairly soon. The current results look promising.

I'm going to use this discussion to ask some questions, so I don't break something in the process.

[veracioux]

@borgmanJeremy @mmahmoudian What are all the uses for FlameshotDBusAdapter::captureSaved, captureTaken and captureFailed externally (outside of the source code, which I can easily inspect)?

I know that capture{Taken,Failed} are used to print the screenshot or geometry when the --print-geometry or --raw options are used. But other than that, is there another use for them? The captureSaved seems to be unused.

How I checked:

• grep
• using dbus-monitor, but I'm still a bit clumsy with it

[borgmanJeremy]

No I dont believe they are used anywhere externally.