CLI Command to Generate Summary CSV

## Background

During a batch analysis, all YARA match results are saved to Dynamo. However, SNS alerts are not sent for these matches if they were already matched in a previous version of the analyzers.

It can be very useful to see a summary of all of the YARA matches from the current versions of the analyzers, which will include malware or other YARA matches that may have been matched long ago.

## Desired Change

Add a command to the CLI to generate a CSV summary of the latest YARA matches, e.g. `manage.py generate_match_report`

Start with the CLI entry point in manage.py and trace how YARA match results are stored in Dynamo. The command should generate a CSV summary of the latest matches from the current analyzer versions; verify that the report includes matches that were found in earlier analyzer versions.

Written by the indexing model from the issue text.