Support setting vector_db as a param (#2313)

* Added vectordb base and chromadb

* Remove timer and unused functions

* Added filter by distance

* Added test utils

* Fix format

* Fix type hint of dict

* Rename test

* Add test chromadb

* Fix test no chromadb

* Add coverage

* Don't skip test vectordb utils

* Add types

* Fix tests

* Fix docs build error

* Add types to base

* Update base

* Update utils

* Update chromadb

* Add get_docs_by_ids

* Improve docstring

* Update init params

* Update init vector db

* Add get all docs

* Move chroma_results_to_query_results to utils

* Add init vectordb

* Convert format of results for old version

* Improve type hints

* Update get_context for new query results format

* Fix typo

* Improve init db

* Update default folder

* Update logger

* Update init, add embedding func

* Update distance_threshold

* Fix logger name

* Update qdrant

* Fix init db

* Update notebooks

* Use kwargs to improve readability

* Improve docstring of vectordb, add two attributes

* Add db_config

* Update gitignore

* Update comments

* Add source

* Fix file downloaded from urls have the same name

* Remove files added by mistake

* Improve docstring

* Update docstring

Co-authored-by: Chi Wang <wang.chi@microsoft.com>

* Update docstring

* Update docstring

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Co-authored-by: Chi Wang <wang.chi@microsoft.com>