feat: add fertilizer pump test functionality with web integration and HAL support

Software/MainBoard/rust/src/webserver/post_json.rs

@@ -102,6 +102,19 @@ where
     Ok(None)
 }
 
+pub(crate) async fn fertilizer_pump_test<T, const N: usize>(
+    _request: &mut Connection<'_, T, N>,
+) -> FatResult<Option<String>>
+where
+    T: Read + Write,
+{
+    let mut board = BOARD_ACCESS.get().await.lock().await;
+    board.board_hal.extra2(true).await?;
+    embassy_time::Timer::after_millis(1000).await;
+    board.board_hal.extra2(false).await?;
+    Ok(None)
+}
+
 pub(crate) async fn write_time<T, const N: usize>(
     request: &mut Connection<'_, T, N>,
 ) -> FatResult<Option<String>>