Include IZ-activated CZ resources in union catalogue

[blackwinter]

As per decision by FEx Daten, all CZ resources should be included in the union catalogue (essentially reverting #1754/#1755; centrally managed CZ resources are already included).

They should either be covered by the inCollection for the hbz NZ or selectable by some newly introduced filter condition.

Example: 99370694196806441

[TobiasNx]

Since they are no genuine NZ Publications I will add an additional inCollection statement.

[TobiasNx]

As per decision by FEx Daten, all CZ resources should be included in the union catalogue (essentially reverting #1754/#1755; centrally managed CZ resources are already included).

They should either be covered by the inCollection for the hbz NZ or selectable by some newly introduced filter condition.

Example: 99370694196806441

now: Example: 99370694196806441

"inCollection": [
    {
      "id": ["https://nrw.digibib.net/search/hbzvk/"](https://nrw.digibib.net/search/hbzvk/),
      "label": "DigiBib hbz Verbundkatalog",
      "type": [
        "Collection"
      ]
    },
    {
      "id": ["http://lobid.org/resources/HT014846970#!"](http://lobid.org/resources/HT014846970#!),
      "label": "Zeitschriftendatenbank (ZDB)",
      "type": [
        "Collection"
      ]
    }
  ],

[blackwinter]

Seems to be working as intended: 99370694196806441 was not included before, is included now; ZDB ID 2669828-6 yielded one hit before (990192163630206441), yields two hits now (990192163630206441 and 99370694196806441).

Total number of hits: 22.6m before, 25.3m now.

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