feat(alerts): add CSV to email alert report, better CSV names

[Samyak2]

Changes

• Modify make_anomaly_data_csv to handle reports too
• Make make_anomaly_data_csv a public function, to use it in base_alerts_digest.py
• Modify make_anomaly_data_csv to take AnomalyPointFormatted to make it consistent with reports. Also changed creation of AlertsIndividualData to store AnomalyPointFormatted instead of AnomalyPoint.
• Add better file name to individual alert CSV.
  • Change send_static_alert_email to not set the mime subtype same as the file name
  • Change send_static_alert_email to optionally take the MIME main and sub type
  • Change individual alert CSV dict to include MIME types and better name with KPI name and date
• Add CSV to alert report, with correct MIME types and a nice name

[gitpod-io]

[netlify]

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