firmware/installPybricksDialog: finish EV3 implementation

Add missing bits to get firmware flashing on EV3 working. Currently
requires custom firmware since we don't have a packaged one yet.

src/firmware/installPybricksDialog/InstallPybricksDialog.tsx

@@ -72,6 +72,8 @@ function getHubTypeFromMetadata(
             return Hub.Prime;
         case HubType.EssentialHub:
             return Hub.Essential;
+        case HubType.EV3:
+            return Hub.EV3;
         default:
             return fallback;
     }
@@ -89,6 +91,8 @@ function getHubTypeNameFromMetadata(metadata: FirmwareMetadata | undefined): str
             return 'SPIKE Prime/MINDSTORMS Robot Inventor hub';
         case HubType.EssentialHub:
             return 'SPIKE Essential hub';
+        case HubType.EV3:
+            return 'MINDSTORMS EV3 hub';
         default:
             return '?';
     }

src/firmware/installPybricksDialog/index.ts

@@ -37,6 +37,7 @@ const supportHubs: readonly HubType[] = [
     HubType.TechnicHub,
     HubType.PrimeHub,
     HubType.EssentialHub,
+    HubType.EV3,
 ];
 
 export function validateMetadata(metadata: FirmwareMetadata) {

src/firmware/sagas.ts

@@ -935,8 +935,25 @@ function* handleInstallPybricks(): Generator {
             }
             break;
         case 'usb-ev3':
-            // TODO: implement flashing via EV3 USB
-            console.error('Flashing via EV3 USB is not implemented yet');
+            try {
+                const { firmware } = yield* loadFirmware(
+                    accepted.firmwareZip,
+                    accepted.hubName,
+                );
+
+                yield* put(firmwareFlashEV3(firmware.buffer as ArrayBuffer));
+            } catch (err) {
+                // istanbul ignore if
+                if (process.env.NODE_ENV !== 'test') {
+                    console.error(err);
+                }
+
+                yield* put(
+                    alertsShowAlert('alerts', 'unexpectedError', {
+                        error: ensureError(err),
+                    }),
+                );
+            }
             break;
     }
 }