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

app/hooks/useToasts.ts

@@ -0,0 +1,9 @@
+import useStores from "./useStores";
+
+export default function useToasts() {
+  const { toasts } = useStores();
+  return {
+    showToast: toasts.showToast,
+    hideToast: toasts.hideToast,
+  };
+}