[IO] S3 Config to incorporate STS assume role credentials for parquet reader

[raghumdani]

Is your feature request related to a problem? Please describe.
We would like to use daft.read_parquet method due to it's efficiency. However, we our files are access via STS assume role credentials from S3. There is an io_config=S3Config we can specify to set access key to use for S3 access, however I see session_token missing.

Describe the solution you'd like
The session_token can be added to S3 Config:

pub struct S3Config {
    pub region_name: Option<String>,
    pub endpoint_url: Option<String>,
    pub key_id: Option<String>,
    pub access_key: Option<String>,
    pub session_token: Option<String>,
    pub anonymous: bool,
}

Describe alternatives you've considered

• Setting environment variables is not ideal because each file is accessed with different credentials in most cases which would break in a distributed environment.

Additional context
Add any other context or screenshots about the feature request here.