out in the open december 2025 (#578)

* out in the open december 2025

* add more links

* more links

* add first part open data

* add second part open data

* add part statistics

* add part policy

* add part digital souveranity

* add part digitalization

* add part juris

* add section digital omnibus

* add section transparency

* add section health

* add section culture

* add section energy

* add section map

* add section climate

* final section

* fix typo

Author: joergreichert