Allow configuring Azure Search AI from UI or appsettings.

[MikeAlhayek]

@bleroy

Made few changes here. Now you may provide settings for your Azure Search AI via UI and/or appsettings. By default, we require the user to provide service info via the UI by navigating to Configurations >> Azure AI Search.

I also added (untested) support for managed-identity for Azure Search AI. You can toggle between Default and API Key authentication type from the UI. If you are able to, can you please check out this PR and test drive it with your settings? Please test both API Key and Default I have not tested the Default type as I do not have an instances that user managed-identity.

Also, I believe I fixed the issue you encountered here #14984 (comment)

Lastly, please delete all existing indexes and create then all over again. Let me know if you run into any issue or if you find room for improvement from a user experience.

[MikeAlhayek]

@bleroy I updated the instruction if you already read them. Here is how you can setup your own instance settings

In the appsettings, you may enable the configuration globally by adding this

{
  "OrchardCore":{
    "OrchardCore_AzureAISearch": {
      "Endpoint": "https://instance-id.search.windows.net",
      "IndexesPrefix":"",
      "AuthenticationType": "ApiKey",
      "DisableUIConfiguration": false,  // you can disable UI configs if you like
      "Credential": {
        "Key": "Your key"
      }
    }
  }
}

Please let me know if you are able or not to test this PR out.

[bleroy]

Thanks, I'll try it sometime today or tomorrow. I'm not sure I'll be able to test MI just yet though.