feat: 对接生图功能

Co-authored-by: Copilot <copilot@github.com>

app/services/image_service.ts

@@ -0,0 +1,19 @@
+import type {
+  ICommonResponse,
+  IImageGenerateData,
+  IImageGenerateRequest
+} from "#shared/types";
+
+export class ImageService {
+  public static basePath = "/api/images";
+
+  public static GenerateImage(request: IImageGenerateRequest) {
+    return $fetch<ICommonResponse<IImageGenerateData>>(
+      `${ImageService.basePath}/generate`,
+      {
+        method: "POST",
+        body: request
+      }
+    );
+  }
+}