Implement compression quota refunds and admin manual subscription

src/state.rs

@@ -0,0 +1,10 @@
+use crate::config::Config;
+use crate::services::mail::Mailer;
+
+#[derive(Clone)]
+pub struct AppState {
+    pub config: Config,
+    pub db: sqlx::PgPool,
+    pub redis: redis::aio::ConnectionManager,
+    pub mailer: std::sync::Arc<Mailer>,
+}