Offers, redemption, preview subscriptions (#4121)

* Initial db migration/impl, guarded partner routes

* Add guard to /redeem

* Add `public` column to products prices, only expose public prices

* Query cache

* Add partner subscription type

* 5 days subscription interval, metadata

* Create server on redeem

* Query cache

* Fix race condition

* Unprovision Medal subscriptions

* Consider due expiring charge as unprovisionable

* Query cache

* Use a queue

* Promote to full subscription, fmt + clippy

* Patch expiring charge on promotion, comments

* Additional comments

* Add `tags` field to Archon /create request

* Address review comments

* Query cache

* Final fixes to edit_subscription

* Appease clippy

* fmt

apps/labrinth/src/routes/internal/mod.rs

@@ -2,6 +2,7 @@ pub(crate) mod admin;
 pub mod billing;
 pub mod flows;
 pub mod gdpr;
+pub mod medal;
 pub mod moderation;
 pub mod pats;
 pub mod session;
@@ -24,6 +25,7 @@ pub fn config(cfg: &mut actix_web::web::ServiceConfig) {
             .configure(moderation::config)
             .configure(billing::config)
             .configure(gdpr::config)
-            .configure(statuses::config),
+            .configure(statuses::config)
+            .configure(medal::config),
     );
 }