Credit subscriptions (#4575)

* Implement subscription crediting

* chore: query cache, clippy, fmt

* Improve code, improve query for next open charge

* chore: query cache, clippy, fmt

* Move server ID copy button up

* Node + region crediting

* Make it less ugly

* chore: query cache, clippy, fmt

* Bugfixes

* Fix lint

* Adjust migration

* Adjust migration

* Remove billing change

* Move DEFAULT_CREDIT_EMAIL_MESSAGE to utils.ts

* Lint

* Merge

* bump clickhouse, disable validation

* tombi fmt

* Update cargo lock

apps/labrinth/migrations/20251017120000_subscription-credited-notification.sql

@@ -0,0 +1,44 @@
+CREATE TABLE users_subscriptions_credits (
+	id SERIAL PRIMARY KEY,
+	subscription_id BIGINT NOT NULL REFERENCES users_subscriptions (id),
+	user_id BIGINT NOT NULL REFERENCES users (id),
+	creditor_id BIGINT NOT NULL REFERENCES users (id),
+	days INTEGER NOT NULL,
+	previous_due TIMESTAMPTZ NOT NULL,
+	next_due TIMESTAMPTZ NOT NULL,
+	created TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);
+
+INSERT INTO notifications_types
+	(name, delivery_priority, expose_in_user_preferences, expose_in_site_notifications)
+VALUES ('subscription_credited', 1, FALSE, FALSE);
+
+INSERT INTO users_notifications_preferences (user_id, channel, notification_type, enabled)
+VALUES (NULL, 'email', 'subscription_credited', TRUE);
+
+INSERT INTO notifications_templates
+	(channel, notification_type, subject_line, body_fetch_url, plaintext_fallback)
+VALUES
+	(
+		'email',
+		'subscription_credited',
+		'We’ve added time to your server',
+		'https://modrinth.com/_internal/templates/email/subscription-credited',
+		CONCAT(
+			'Hi {user.name},',
+			CHR(10),
+			CHR(10),
+			'{credit.header_message}',
+			CHR(10),
+			CHR(10),
+			'To make up for it, we''ve added {credit.days_formatted} to your {credit.subscription.type} subscription.',
+			CHR(10),
+			CHR(10),
+			'Your next charge was scheduled for {credit.previous_due} and will now be on {credit.next_due}.',
+			CHR(10),
+			CHR(10),
+			'Thank you for supporting us,',
+			CHR(10),
+			'The Modrinth Team'
+		)
+	);