feat: add pinecone source tag (#44)

Author: Ganeshsivakumar

templates/kafka-to-pinecone/src/main/java/com/templates/langchainbeam/PineconeWriter.java

@@ -31,7 +31,7 @@ public PineconeWriter(String pineconeKey, String hostUrl, String indexName, Stri
 
     @Setup
     public void setup() {
-        PineconeConfig config = new PineconeConfig(pineconeKey);
+        PineconeConfig config = new PineconeConfig(pineconeKey, "langbeam");
         config.setHost(hostUrl);
         this.connection = new PineconeConnection(config);
         this.index = new Index(connection, indexName);