chore: Move to Typescript (#2783)

This PR moves the entire project to Typescript. Due to the ~1000 ignores this will lead to a messy codebase for a while, but the churn is worth it – all of those ignore comments are places that were never type-safe previously.

closes #1282

server/utils/slugify.ts

@@ -0,0 +1,9 @@
+import slug from "slug";
+
+slug.defaults.mode = "rfc3986";
+
+export default function slugify(text: string): string {
+  return slug(text, {
+    remove: /[.]/g,
+  });
+}