Feature/add validation workflows

• Fix the product_validation task
• Add Router verification workflow
• Add IP Trunk verification workflow
• Update documentation
• Add modify_note workflow to all products
• Update translations
• Note: The router creation workflow now fails if IPAM is incorrectly configured, with the reasoning that the step can be retried after amending the problem. This can be reverted.

gso/schedules/__init__.py

 """Tasks that are scheduled to run periodically in :term:`GSO`."""
-
-from orchestrator.schedules import SchedulingFunction  # type:ignore[attr-defined]
-
-from gso.schedules.validate_routers_nightly import run_validate_routers
-
-#  TODO: This list overwrites the default, and therefore leaves all default schedules unused.
-#  TODO: Consider using the default schedules.
-ALL_SCHEDULERS: list[SchedulingFunction] = [run_validate_routers]