Add cifs-transformer to create road works in cifs-format

[hbruch]

The new project stadtnavi/cifs-transformer generates a cifs.json which contains the BW road works as well as those published by the city of Herrenberg via CSV.

Currently, this file is generated periodically at https://data.mfdz.de/hbg/roadworks/cifs.json.

In a first step, this file should be used in the tilelive map layer.

In the second step, a systemd job should be added to digitransit-ansible which periodically (e.g. every 10min) publishes the cifs via api.*