Added a home page prompt for missing API keys of enterprise providers (#1056)

Co-authored-by: Thorsten Sommer <SommerEngineering@users.noreply.github.com>

app/MindWork AI Studio/Settings/DataModel/DataUserAPIKeyPrompt.cs

@@ -0,0 +1,63 @@
+using AIStudio.Tools.PluginSystem;
+
+using Lua;
+
+namespace AIStudio.Settings.DataModel;
+
+/// <summary>
+/// What a configuration plugin tells the user while AI Studio asks for the API key of the providers
+/// which that plugin marked with "PromptForUserAPIKey".
+/// </summary>
+public sealed record DataUserAPIKeyPrompt : ILivePluginContent
+{
+    private static readonly ILogger LOG = Program.LOGGER_FACTORY.CreateLogger<DataUserAPIKeyPrompt>();
+
+    /// <summary>
+    /// The stable ID of the prompt. A configuration plugin has at most one, so this is the plugin's ID.
+    /// </summary>
+    public string Id { get; private init; } = string.Empty;
+
+    /// <summary>
+    /// The ID of the enterprise configuration plugin that provides this prompt.
+    /// </summary>
+    public Guid EnterpriseConfigurationPluginId { get; private init; } = Guid.Empty;
+
+    /// <summary>
+    /// The optional title shown to the user. When empty, AI Studio shows a title of its own.
+    /// </summary>
+    public string Title { get; private init; } = string.Empty;
+
+    /// <summary>
+    /// The Markdown instructions which explain how to obtain the API key.
+    /// </summary>
+    public string Markdown { get; private init; } = string.Empty;
+
+    public static bool TryParseConfiguration(LuaTable table, Guid configPluginId, out DataUserAPIKeyPrompt prompt)
+    {
+        prompt = new DataUserAPIKeyPrompt();
+        if (!table.TryGetValue("Markdown", out var markdownValue) || !markdownValue.TryRead<string>(out var markdown) || string.IsNullOrWhiteSpace(markdown))
+        {
+            LOG.LogWarning("The configured user API key prompt does not contain a valid Markdown field (config plugin id: {ConfigPluginId}).", configPluginId);
+            return false;
+        }
+
+        var title = string.Empty;
+        if (table.TryGetValue("Title", out var titleValue))
+        {
+            if (titleValue.TryRead<string>(out var titleText))
+                title = titleText;
+            else
+                LOG.LogWarning("The configured user API key prompt does not contain a valid Title field. Falling back to the built-in title (config plugin id: {ConfigPluginId}).", configPluginId);
+        }
+
+        prompt = new DataUserAPIKeyPrompt
+        {
+            Id = configPluginId.ToString(),
+            Title = title.Trim(),
+            Markdown = AIStudio.Tools.Markdown.RemoveSharedIndentation(markdown),
+            EnterpriseConfigurationPluginId = configPluginId,
+        };
+
+        return true;
+    }
+}