feat: add intermediate step count in flow apps

packages/web/src/components/IntermediateStepCount/index.tsx

@@ -0,0 +1,20 @@
+import * as React from 'react';
+import Typography from '@mui/material/Typography';
+
+import { Container } from './style';
+
+type IntermediateStepCountProps = {
+  count: number;
+}
+
+export default function IntermediateStepCount(props: IntermediateStepCountProps) {
+  const { count } = props;
+
+  return (
+    <Container>
+      <Typography variant="body2">
+        +{count}
+      </Typography>
+    </Container>
+  );
+}