Add chain data

[davidgasquez]

Should be easy to use Indexed.xyz as the data source for Ethereum based chains. They're storing the data as Parquet files on R2.

[davidgasquez]

We need to preprend something like this:

SET s3_region="auto"
SET s3_endpoint='https://ed5d915e0259fcddb2ab1ce5592040c3.r2.cloudflarestorage.com';
SET s3_access_key_id='43c31ff797ec2387177cabab6d18f15a';
SET s3_secret_access_key='afb354f05026f2512557922974e9dd2fdb21e5c2f5cbf929b35f0645fb284cf7';

[davidgasquez]

Done, but doesn't work very well.