Fix #1386 add backfill endpoints and cli

[chrisjsimpson]

cli and backfill endpoints added for

• backfill_transactions

• backfill_subscriptions

• backfill_persons

• backfill_stripe_invoices

• @admin.route("/backfill/transactions/")

• @admin.route("/backfill/subscriptions/")

• @admin.route("/backfill/persons/")

• @admin.route("/backfill/stripe-invoices/")

Issue ref: #1386

Screenshot before:

Screenshot after:

How to run test(s) for this PR see: Testing

[github-actions[bot]]

:rocket: PR was released in v0.1.199 :rocket:

[github-actions[bot]]

:rocket: PR was released in v0.1.199 :rocket:

[github-actions[bot]]

:rocket: PR was released in v0.1.199 :rocket:

[github-actions[bot]]

:rocket: PR was released in v0.1.199 :rocket: