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/HelpText.ts

@@ -0,0 +1,9 @@
+import styled from "styled-components";
+
+const HelpText = styled.p<{ small?: boolean }>`
+  margin-top: 0;
+  color: ${(props) => props.theme.textSecondary};
+  font-size: ${(props) => (props.small ? "13px" : "inherit")};
+`;
+
+export default HelpText;