Add Argument data source and index its data

[blocknomad]

Index Argument data trying to approximate to the following schema as much as possible for now https://github.com/FractalFlows/fractalflows-server/blob/staging/src/graphql.ts#L252

SC address on Goerli 0x19d7bCba5eE75C5ed79E6673aB51fAba9510fEC8