feat: add script to create space allocations snapshot

[BravoNatalie]

Description

This PR addresses the issue storacha/project-tracking#183.

This PR introduces the billing/scripts/space-allocations-snapshot script, which utilizes the allocation and store tables to calculate customer storage size and provide an estimate of their overall usage.

Please note that this method is not entirely accurate, as it does not account for deleted storage.

For detailed instructions on using the script, refer to the billing/scripts/space-allocations-snapshot/README.md file.

[seed-deploy]

View stack outputs

• pr451-w3infra-BillingDbStack

  Name	Value
  customerTableName	pr451-w3infra-customer
  egressTrafficTableName	pr451-w3infra-egress-traffic-events
  spaceDiffTableName	pr451-w3infra-space-diff
  spaceSnapshotTableName	pr451-w3infra-space-snapshot
  usageTable	pr451-w3infra-usage

• pr451-w3infra-BillingStack

  Name	Value
  ApiEndpoint	https://qfz5rs0bod.execute-api.us-east-2.amazonaws.com
  billingCronHandlerURL	https://g3sn3nhv6yay3vetbjgina6z3e0njtlp.lambda-url.us-east-2.on.aws/
  CustomDomain	https://pr451.billing.web3.storage
  EgressTrafficQueueURL	https://sqs.us-east-2.amazonaws.com/505595374361/pr451-w3infra-egress-traffic-queue

• pr451-w3infra-CarparkStack

  Name	Value
  BucketName	carpark-pr451-0
  Region	us-east-2

• pr451-w3infra-PSAStack

  Name	Value
  downloadFunctionURL	https://ojxeqsqph6pzuyr7sw34moki4e0bqfom.lambda-url.us-east-2.on.aws/
  hashFunctionURL	https://qx3k7bzyiwnkjzcukm2gjg3xwa0xddhk.lambda-url.us-east-2.on.aws/

• pr451-w3infra-RoundaboutStack

  Name	Value
  ApiEndpoint	https://5y3v3vmtdf.execute-api.us-east-2.amazonaws.com
  CustomDomain	https://pr451.roundabout.web3.storage

• pr451-w3infra-UcanInvocationStack

  Name	Value
  invocationBucketName	invocation-store-pr451-0
  taskBucketName	task-store-pr451-0
  workflowBucketName	workflow-store-pr451-0

• pr451-w3infra-UploadApiStack

  Name	Value
  ApiEndpoints	["https://hivwzefdh8.execute-api.us-east-2.amazonaws.com","https://txbrl4w47h.execute-api.us-east-2.amazonaws.com"]
  CustomDomains	["https://pr451.up.web3.storage","https://pr451.up.storacha.network"]

• pr451-w3infra-BusStack

• pr451-w3infra-FilecoinStack

• pr451-w3infra-IndexerStack

• pr451-w3infra-ReplicatorStack

• pr451-w3infra-UcanFirehoseStack

• pr451-w3infra-UploadDbStack

[travis]

This looks great, thank you! I had a couple minor nits but nothing blocking.

Do you think it's worth adding any testsuites for this? I know a lot of it is boilerplate setup code for the stores, so the types might be enough to feel pretty solid about this, but if there are any trickier bits it would be nice to get some tests in place as we add code.

Great work!