feat: add custom css for board and custom classes in advanced options for items (#512)

* feat: add custom css for board and custom classes in advanced options for items

* chore: add mysql migration

* fix: test not working

* fix: format issues

* fix: typecheck issue

* fix: build issue

* chore: add missing translations

* fix: merge issues related to migrations

* fix: format issues

* fix: merge issue with migration

* fix: format issue

packages/db/migrations/sqlite/0003_adorable_raider.sql

@@ -0,0 +1,6 @@
+CREATE TABLE `serverSetting` (
+	`key` text PRIMARY KEY NOT NULL,
+	`value` text DEFAULT '{"json": {}}' NOT NULL
+);
+--> statement-breakpoint
+CREATE UNIQUE INDEX `serverSetting_key_unique` ON `serverSetting` (`key`);