Export to Open Event Format

[Pablohn26]

Is your feature request related to a problem? Please describe.
I would like to use giggity (website) to see the event schedule. To do so, we need to be able to export to Open Event Format (xml) (I guess they are named pentabarf/frab XML too)

Describe the solution you'd like
The ability to export to Open Event Format

Describe alternatives you've considered
No alternative.

Additional context
Here are more information.
This is an example of xml file exported with pretalx that could be imported to giggity.

[ThiefMaster]

XML, really? Why not JSON? :/

Anyway, this sounds like a nice thing for someone to write as a plugin!