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/Labeled.tsx

@@ -0,0 +1,25 @@
+import { observer } from "mobx-react";
+import * as React from "react";
+import styled from "styled-components";
+import Flex from "~/components/Flex";
+
+type Props = {
+  label: React.ReactNode | string;
+  children?: React.ReactNode;
+};
+
+const Labeled = ({ label, children, ...props }: Props) => (
+  <Flex column {...props}>
+    <Label>{label}</Label>
+    {children}
+  </Flex>
+);
+
+export const Label = styled(Flex)`
+  font-weight: 500;
+  padding-bottom: 4px;
+  display: inline-block;
+  color: ${(props) => props.theme.text};
+`;
+
+export default observer(Labeled);