Use ingestion pipeline for dedicated vector stores (#74)

helpers/env-variables.ts

templates/components/loaders/python/file.py

templates/components/vectordbs/python/astra/__init__.py

templates/components/vectordbs/python/astra/generate.py

templates/components/vectordbs/python/astra/vectordb.py

templates/components/vectordbs/python/milvus/__init__.py

templates/components/vectordbs/python/milvus/generate.py

templates/components/vectordbs/python/milvus/vectordb.py

templates/components/vectordbs/python/mongo/__init__.py

templates/components/vectordbs/python/mongo/generate.py

templates/components/vectordbs/python/mongo/index.py

templates/components/vectordbs/python/mongo/vectordb.py

templates/components/vectordbs/python/none/constants.py

templates/components/vectordbs/python/none/generate.py

templates/components/vectordbs/python/none/index.py

templates/components/vectordbs/python/pg/__init__.py

templates/components/vectordbs/python/pg/constants.py

templates/components/vectordbs/python/pg/generate.py

templates/components/vectordbs/python/pg/index.py

templates/components/vectordbs/python/pg/vectordb.py