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/components/ContextMenu/OverflowMenuButton.tsx

@@ -0,0 +1,25 @@
+import { MoreIcon } from "outline-icons";
+import * as React from "react";
+import { MenuButton } from "reakit/Menu";
+import NudeButton from "~/components/NudeButton";
+
+type Props = React.ComponentProps<typeof MenuButton> & {
+  className?: string;
+  iconColor?: string;
+};
+
+export default function OverflowMenuButton({
+  iconColor,
+  className,
+  ...rest
+}: Props) {
+  return (
+    <MenuButton {...rest}>
+      {(props) => (
+        <NudeButton className={className} {...props}>
+          <MoreIcon color={iconColor} />
+        </NudeButton>
+      )}
+    </MenuButton>
+  );
+}