[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/docstores/__init__.py

@@ -1,4 +1,4 @@
 from .base import BaseDocumentStore
-from .simple import InMemoryDocumentStore
+from .in_memory import InMemoryDocumentStore
 
 __all__ = ["BaseDocumentStore", "InMemoryDocumentStore"]

knowledgehub/docstores/in_memory.py

@@ -10,7 +10,7 @@ class InMemoryDocumentStore(BaseDocumentStore):
     """Simple memory document store that store document in a dictionary"""
 
     def __init__(self):
-        self.store = {}
+        self._store = {}
 
     def add(
         self,
@@ -32,20 +32,20 @@ class InMemoryDocumentStore(BaseDocumentStore):
             docs = [docs]
 
         for doc_id, doc in zip(doc_ids, docs):
-            if doc_id in self.store and not exist_ok:
+            if doc_id in self._store and not exist_ok:
                 raise ValueError(f"Document with id {doc_id} already exist")
-            self.store[doc_id] = doc
+            self._store[doc_id] = doc
 
     def get(self, ids: Union[List[str], str]) -> List[Document]:
         """Get document by id"""
         if not isinstance(ids, list):
             ids = [ids]
 
-        return [self.store[doc_id] for doc_id in ids]
+        return [self._store[doc_id] for doc_id in ids]
 
     def get_all(self) -> dict:
         """Get all documents"""
-        return self.store
+        return self._store
 
     def delete(self, ids: Union[List[str], str]):
         """Delete document by id"""
@@ -53,11 +53,11 @@ class InMemoryDocumentStore(BaseDocumentStore):
             ids = [ids]
 
         for doc_id in ids:
-            del self.store[doc_id]
+            del self._store[doc_id]
 
     def save(self, path: Union[str, Path]):
         """Save document to path"""
-        store = {key: value.to_dict() for key, value in self.store.items()}
+        store = {key: value.to_dict() for key, value in self._store.items()}
         with open(path, "w") as f:
             json.dump(store, f)
 
@@ -65,4 +65,4 @@ class InMemoryDocumentStore(BaseDocumentStore):
         """Load document store from path"""
         with open(path) as f:
             store = json.load(f)
-        self.store = {key: Document.from_dict(value) for key, value in store.items()}
+        self._store = {key: Document.from_dict(value) for key, value in store.items()}