Add support for embedding models in OpenRouter

Author: prrao87

rust/cocoindex/src/llm/mod.rs

@@ -166,6 +166,10 @@ pub async fn new_llm_embedding_client(
         LlmApiType::Ollama => {
             Box::new(ollama::Client::new(address).await?) as Box<dyn LlmEmbeddingClient>
         }
+        LlmApiType::OpenRouter => {
+            Box::new(openrouter::Client::new_openrouter(address, api_key).await?)
+                as Box<dyn LlmEmbeddingClient>
+        }
         LlmApiType::Gemini => {
             Box::new(gemini::AiStudioClient::new(address, api_key)?) as Box<dyn LlmEmbeddingClient>
         }
@@ -178,8 +182,7 @@ pub async fn new_llm_embedding_client(
             Box::new(gemini::VertexAiClient::new(address, api_key, api_config).await?)
                 as Box<dyn LlmEmbeddingClient>
         }
-        LlmApiType::OpenRouter
-        | LlmApiType::LiteLlm
+        LlmApiType::LiteLlm
         | LlmApiType::Vllm
         | LlmApiType::Anthropic
         | LlmApiType::Bedrock => {