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/useBoolean.ts

@@ -0,0 +1,23 @@
+import * as React from "react";
+
+type InitialState = boolean | (() => boolean);
+
+/**
+ * React hook to manage booleans
+ *
+ * @param initialState the initial boolean state value
+ */
+export default function useBoolean(
+  initialState: InitialState = false
+): [boolean, () => void, () => void] {
+  const [value, setValue] = React.useState(initialState);
+  const setTrue = React.useCallback(() => {
+    setValue(true);
+  }, []);
+
+  const setFalse = React.useCallback(() => {
+    setValue(false);
+  }, []);
+
+  return [value, setTrue, setFalse];
+}