Added embedding API (#654)

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

app/MindWork AI Studio/Provider/SelfHosted/HostExtensions.cs

@@ -30,6 +30,11 @@ public static class HostExtensions
         _ => "audio/transcriptions",
     };
     
+    public static string EmbeddingURL(this Host host) => host switch
+    {
+        _ => "embeddings",
+    };
+    
     public static bool IsChatSupported(this Host host)
     {
         switch (host)

app/MindWork AI Studio/Provider/SelfHosted/ProviderSelfHosted.cs

@@ -95,6 +95,13 @@ public sealed class ProviderSelfHosted(Host host, string hostname) : BaseProvide
         return await this.PerformStandardTranscriptionRequest(requestedSecret, transcriptionModel, audioFilePath, host, token);
     }
     
+    /// <inhertidoc />
+    public override async Task<IReadOnlyList<IReadOnlyList<float>>> EmbedTextAsync(Provider.Model embeddingModel, SettingsManager settingsManager, CancellationToken token = default, params List<string> texts)
+    {
+        var requestedSecret = await RUST_SERVICE.GetAPIKey(this, SecretStoreType.EMBEDDING_PROVIDER);
+        return await this.PerformStandardTextEmbeddingRequest(requestedSecret, embeddingModel, token: token, texts: texts);
+    }
+    
     public override async Task<IEnumerable<Provider.Model>> GetTextModels(string? apiKeyProvisional = null, CancellationToken token = default)
     {
         try