* Update push subscription API model to be Mastodon 4.0 compatible
* Add webpush-go dependency
# Conflicts:
# go.sum
* Single-row table for storing instance's VAPID key pair
* Generate VAPID key pair during startup
* Add VAPID public key to instance info API
* Return VAPID public key when registering an app
* Store Web Push subscriptions in DB
* Add Web Push sender (similar to email sender)
* Add no-op push senders to most processor tests
* Test Web Push notifications from workers
* Delete Web Push subscriptions when account is deleted
* Implement push subscription API
* Linter fixes
* Update Swagger
* Fix enum to int migration
* Fix GetVAPIDKeyPair
* Create web push subscriptions table with indexes
* Log Web Push server error messages
* Send instance URL as Web Push JWT subject
* Accept any 2xx code as a success
* Fix malformed VAPID sub claim
* Use packed notification flags
* Remove unused date columns
* Add notification type for update notifications
Not used yet
* Make GetVAPIDKeyPair idempotent
and remove PutVAPIDKeyPair
* Post-rebase fixes
* go mod tidy
* Special-case 400 errors other than 408/429
Most client errors should remove the subscription.
* Improve titles, trim body to reasonable length
* Disallow cleartext HTTP for Web Push servers
* Fix lint
* Remove redundant index on unique column
Also removes redundant unique and notnull tags on ID column since these are implied by pk
* Make realsender.go more readable
* Use Tobi's style for wrapping errors
* Restore treating all 5xx codes as temporary problems
* Always load target account settings
* Stub `policy` and `standard`
* webpush.Sender: take type converter as ctor param
* Move webpush.MockSender and noopSender into testrig
5b765d734e