remote functions

[max-ostapenko]

• triggering export function from SQL using run_export_job remote function
• supporting Firestore and Cloud Storage exports
• changed export configuration to more flexible, example:

{
  "destination": "firestore",
  "config": {
    "database": "tech-report-api-dev",
    "collection": "adoption",
    "type": "report",
    "date": "2025-01-01"
  },
  "query": "SELECT STRING(date) AS date, * EXCEPT(date) FROM reports.tech_report_adoption WHERE date = '2025-01-01'"
}

or

{
  "destination": "cloud_storage",
  "config": {
    "bucket": "httparchive",
    "name": "/reports/bytesTotal.json"
  },
  "query": "SELECT FORMAT_DATE('%Y_%m_%d', date) AS date, * EXCEPT(date) FROM `httparchive.reports.bytesTotal_timeseries`"
}