feat: add BuildsDeprecationNote component

src/components/UI/downloads/BuildsDeprecationNote.tsx

@@ -0,0 +1,17 @@
+import { Stack, Text } from '@chakra-ui/react';
+import { FC } from 'react';
+
+interface Props {
+  os: string;
+}
+
+export const BuildsDeprecationNote: FC<Props> = ({ os }) => {
+  return (
+    <Stack p={4}>
+      <Text textAlign='center' bg='code-bg' p={3}>
+        <strong>Geth no longer releases builds for {os}.</strong> {os} builds on this page are
+        archival and are not consistent with current Geth.
+      </Text>
+    </Stack>
+  );
+};

src/components/UI/downloads/index.ts

@@ -1,3 +1,4 @@
+export * from './BuildsDeprecationNote';
 export * from './DownloadsHero';
 export * from './DownloadsSection';
 export * from './DownloadsTable';