[FEATURE] Reranking of the Search Results

[20001LastOrder]

PROBLEM
Currently, the search actions simply use the underlying search engine to retrieve results from the (refactored query). We may also want to do a reranking based on the original question.

SOLUTION
After the BaseRetrievalAction is implemented (#347), add a reranking component to it.

[andytai7]

Will look into this.