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

Software/MainBoard/rust/src/hal/mod.rs

@@ -164,6 +164,7 @@ pub trait BoardInteraction<'a> {
     async fn get_mptt_voltage(&mut self) -> FatResult<Voltage>;
     async fn get_mptt_current(&mut self) -> FatResult<Current>;
     async fn can_power(&mut self, state: bool) -> FatResult<()>;
+    async fn extra2(&mut self, enable: bool) -> FatResult<()>;
 
     async fn backup_config(&mut self, config: &PlantControllerConfig) -> FatResult<()>;
     async fn read_backup(&mut self) -> FatResult<PlantControllerConfig>;

Software/MainBoard/rust/src/hal/v4_hal.rs

@@ -484,6 +484,15 @@ impl<'a> BoardInteraction<'a> for V4<'a> {
         Ok(())
     }
 
+    async fn extra2(&mut self, enable: bool) -> FatResult<()> {
+        if enable {
+            self.extra2.set_high();
+        } else {
+            self.extra2.set_low();
+        }
+        Ok(())
+    }
+
     async fn backup_config(&mut self, controller_config: &PlantControllerConfig) -> FatResult<()> {
         let mut buffer: [u8; 4096 - BACKUP_HEADER_MAX_SIZE] = [0; 4096 - BACKUP_HEADER_MAX_SIZE];
         let length = postcard::to_slice(controller_config, &mut buffer)?.len();