Trigger outlet to turn on upon print job

[MathiasYde]

Implement functionality so that this plugin will automatically turn on any connected outlets when Octoprints starts a new print job. When the print job is done, await a configurable amount of time and turn off any outlets.

In fear of the printer starting to print before the outlet is turned on, consider injecting a G4 GCODE instruction in the "Before print job starts" section to mitigate the chances of causing malfunctions.