Add partition to existing delta table

[quartox]

Would this be a good solution to add partitions from parquet to a delta table? E.g. if you wait until a full date partition has been populated and then added dt=2024-05-07 it looks like it would find all relevant parquet files. I think I might be able to use the rust library directly but I was also wondering if you would be open to a contribution that makes this a cli option.

[rtyler]

@quartox technically the CLI could be extended to handle this scenario since the Lambda already handles this scenario.