Import Tables -- Batch Processing

[therealslimhsiehdy]

Issue description

We are currently unable to re-import data from Stable onto a target sandbox due to too much data trying to be processed at once. We need to break up the import into processing 1000 rows per file like we are in export_tables. See Slack discussion for reference and images.

Acceptance criteria

• Break up processing for import into 1000 rows per file in import_tables.py -- please reference code from export_tables.py that is doing something very similar for the export process.
• When importing, a process should not be marked as "Killed" and should process successfully
• Run the new script successfully on litterbox which will close Re-import data from stable onto litterbox #2709 (please reference this ticket in your PR with the "resolves" keyword)

Additional context

Currently it is failing on the Contact table.

Links to other issues

• Blocks Re-import data from stable onto litterbox #2709