* Rename InstallVResponseModel to InstallRequestModel
* Align SettingsInstallController
* Rename split DatabaseInstallResponseModel in two
* Change UserInstallResponseModel to UserInstallViewModel
* Use PresentationModel instead of ViewModel
* Use operation status pattern when validating database
* Prepare for install to return a message
* Begin updating steps
* Make StepBase sharable between upgrade and install
* Update steps
* Use error message from install steps in install controller
* Use error message from upgrade steps in upgrade controller
* Use 500 for install/upgrade failed
It's entirely likely that it has nothing to do with the request
* Updated OpenApi.Json
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Co-authored-by: Bjarke Berg <mail@bergmania.dk>
