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/Heading.ts

@@ -0,0 +1,17 @@
+import styled from "styled-components";
+
+const Heading = styled.h1<{ centered?: boolean }>`
+  display: flex;
+  align-items: center;
+  ${(props) => (props.centered ? "text-align: center;" : "")}
+
+  svg {
+    margin-top: 4px;
+    margin-left: -6px;
+    margin-right: 2px;
+    align-self: flex-start;
+    flex-shrink: 0;
+  }
+`;
+
+export default Heading;