Simplify the BaseComponent inteface (#64)

This change remove `BaseComponent`'s:

- run_raw
- run_batch_raw
- run_document
- run_batch_document
- is_document
- is_batch

Each component is expected to support multiple types of inputs and a single type of output. Since we want the component to work out-of-the-box with both standardized and customized use cases, supporting multiple types of inputs are expected. At the same time, to reduce the complexity of understanding how to use a component, we restrict a component to only have a single output type.

To accommodate these changes, we also refactor some components to remove their run_raw, run_batch_raw... methods, and to decide the common output interface for those components.

Tests are updated accordingly.

Commit changes:

* Add kwargs to vector store's query
* Simplify the BaseComponent
* Update tests
* Remove support for Python 3.8 and 3.9
* Bump version 0.3.0
* Fix github PR caching still use old environment after bumping version

---------

Co-authored-by: ian <ian@cinnamon.is>

knowledgehub/base/component.py

@@ -0,0 +1,35 @@
+from abc import abstractmethod
+
+from theflow.base import Compose
+
+
+class BaseComponent(Compose):
+    """A component is a class that can be used to compose a pipeline
+
+    Benefits of component:
+        - Auto caching, logging
+        - Allow deployment
+
+    For each component, the spirit is:
+        - Tolerate multiple input types, e.g. str, Document, List[str], List[Document]
+        - Enforce single output type. Hence, the output type of a component should be
+        as generic as possible.
+    """
+
+    inflow = None
+
+    def flow(self):
+        if self.inflow is None:
+            raise ValueError("No inflow provided.")
+
+        if not isinstance(self.inflow, BaseComponent):
+            raise ValueError(
+                f"inflow must be a BaseComponent, found {type(self.inflow)}"
+            )
+
+        return self.__call__(self.inflow.flow())
+
+    @abstractmethod
+    def run(self, *args, **kwargs):
+        """Run the component."""
+        ...