[AUR-338, AUR-406, AUR-407] Export pipeline to config for PromptUI. Construct PromptUI dynamically based on config. (#16)

From pipeline > config > UI. Provide example project for promptui

- Pipeline to config: `kotaemon.contribs.promptui.config.export_pipeline_to_config`. The config follows schema specified in this document: https://cinnamon-ai.atlassian.net/wiki/spaces/ATM/pages/2748711193/Technical+Detail. Note: this implementation exclude the logs, which will be handled in AUR-408.
- Config to UI: `kotaemon.contribs.promptui.build_from_yaml`
- Example project is located at `examples/promptui/`

knowledgehub/vectorstores/base.py

@@ -144,8 +144,8 @@ class LlamaIndexVectorStore(BaseVectorStore):
                 query_embedding=embedding,
                 similarity_top_k=top_k,
                 node_ids=ids,
+                **kwargs,
             ),
-            **kwargs,
         )
 
         embeddings = []