These migrations insert the merger change events that are needed for the 2025
municipality mergers.
The migrations executed by the `migrations` service insert the actual merger
change events for
- mergers where the resulting organisation is a new organisation (these were
added earlier in #442);
- mergers where the resulting organisation is an already existing, active
organisation; and
- the special case where the municipality Borsbeek is merging with the
municipality Antwerp, thereby creating a new district Borsbeek.
The migration executed by the `migrations-triggering-indexing` service updates
the status of the necessary organisations:
- the new municipalities/OCMWs/district are set from "Being founded" (nl. "In
oprichting") to "Active"
- the other municipalities are changed from "Active" to "Not active"
- organisations that simply remain active before and after the merger are *not*
updated
As part of the 2025 municipality mergers 3 municipalities, and their
corresponding OCMWs, keep their original URI but do change their name. More
specifically:
- Bilzen becomes Bilzen-Hoeselt
- Ham becomes Tessenderlo-Ham
- Tongeren becomes Tongeren-Borgloon
