I 78 OSDM offline indication of technical viaStations

I-77 OSDM offline - indication of technical viaStations (SBB, ÖBB, DB)

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It should be possible to add ViaStations to support the alignment with the time table only. These ViaStations must not be displayed to the customer in the route description of the travel contract.

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A new flag in ViaStation is needed:

`

"technicalViaOnly": {

"description": "indicates that the via station is included to support the alignment with time tables but is not part of the contractual route provided to the passenger.",

"type": "boolean",

"default": false

}

`