chore: Email + mailer refactor (#3342)

* Huge email refactor

* fix: One rename too many

* comments

server/emails/templates/index.ts

@@ -0,0 +1,16 @@
+import { requireDirectory } from "@server/utils/fs";
+
+const emails = {};
+
+requireDirectory(__dirname).forEach(([module, id]) => {
+  // @ts-expect-error ts-migrate(2339) FIXME: Property 'default' does not exist on type 'unknown'
+  const { default: Email } = module;
+
+  if (id === "index") {
+    return;
+  }
+
+  emails[id] = Email;
+});
+
+export default emails;