feat: add MinIO as storage provider

[azlkiniue]

Add MinIO as additional storage provider. In spirit of creating open source data layer (#793), I'm adding MinIO as open-source alternative for Azure Blob Storage or AWS S3 that's already implemented BaseStorageClient. MinIO is compatible with S3 so only little changes are needed. This PR is inspired from #836.

How to Configure

import chainlit.data as cl_data
from chainlit.data.sql_alchemy import SQLAlchemyDataLayer
from chainlit.data.storage_clients import MinioStorageClient

storage_client = MinioStorageClient(bucket="<your bucket>", endpoint_url="<your minio api endpoint>") # user and password defaults to 'minioadmin'

cl_data._data_layer = SQLAlchemyDataLayer(conninfo="<your conninfo>", storage_provider=storage_client)

PS:
Also fix a little typo

[petri]

Some notes:

• this PR has now became out of date
• fixed version in #koodaamo/chainlit works
• when installing MiniO from e.g. HomeBrew on MacOS, anonymous policy for bucket access must be added manually, otherwise element access fails