[DERCBOT-1374] Public URL for Langfuse Observability Settings

[scezen]

Ticket : DERCBOT-1374

This PR introduces a new optionnal attribute for the Observability Settings :

data class LangfuseObservabilitySetting<T>(
    override val secretKey: T,
    val publicKey: String,
    val url: String,
    val publicUrl : String? = null,
) : ObservabilitySettingBase<T>(ObservabilityProvider.Langfuse), HasSecretKey<T>

If filled, the traceUrl of ObservabilityInfo will get replaced by the public URL as so :

"botMetadata": {
"lastAnswer": false,
"priority": "normal",
"visibility": "UNKNOWN",
"quoteMessage": "UNKNOWN",
"orchestrationLock": false,
"orchestratedBy": null,
"returnsHistory": false,
"debugEnabled": false,
"sourceWithContent": false,
"isGenAiRagAnswer": true,
"streamedResponse": false,
"observabilityInfo": {
"traceId": "6832661a-ed85-404d-abff-71a1f50bf410",
"traceName": "RAG",
"traceUrl": "http://langfuse-public:3000//trace/6832661a-ed85-404d-abff-71a1f50bf410"
}

[assouktim]

Thanks for your code, it just needs a few adjustments.

[Benvii]

Ok but needs to remove it from python side as it's not used

[Benvii]

Why do you have a public URL here as it's not used in the orchestrator.

[Benvii]

I see we share the same data model between the orchestrator and the bot admin BotObservabilityConfigurationDTO.setting is LangfuseObservabilitySetting which came from the Orchestrator API contract we should have a BotAdmin API contract decorrelated from the ochestrator contract to avoid this.