Run FancyWM as Administrator at system startup

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Is your feature request related to a problem? Please describe.
FancyWM cannot manage windows from privileged processes (Run as administrator) unless it is also run privileged. This can be done by right-clicking on FancyWM and selecting "Run as administrator". Unfortunately, there is currently no setting to enable this behavior at startup ("Run automatically at system start" in FancyWM Settings).

Describe the solution you'd like
FancyWM should provide an option to be run automatically at startup as administrator.

Describe alternatives you've considered
It is possible to set up a custom task in Task Scheduler that runs with administrator permissions manually, but this should ideally be implemented in FancyWM itself.

Additional context
See also: #9

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Added in v2.6.0 available now in the Store.