1、增加调用 AI 视频生成能力和虚拟素材库管理的对外api

2、增加后台apikkey管理
3、增加apikey单独的模型定价
4、增加apikey调用情况
5、完善所有数据的注释增加

video-gen-api/app/schemas/api_v3/image.py

@@ -0,0 +1,34 @@
+from pydantic import BaseModel, Field
+
+
+class ApiImageGenerateRequest(BaseModel):
+    """图片生成请求。支持全量 Volcano Ark SDK 参数。"""
+
+    model: str = Field(..., description="模型名称, 如 doubao-seedream-5-0-260128")
+    prompt: str = Field(..., description="图片描述提示词")
+    size: str | None = Field("2K", description="图片尺寸: 2K | 4K 或 2048x2048")
+    response_format: str | None = Field("url", description="返回格式: url | b64_json")
+    watermark: bool | None = Field(False, description="是否添加水印")
+    image: list[str] | None = Field(None, description="参考图片URL列表")
+    output_format: str | None = Field(None, description="输出格式: jpeg | png | webp")
+    sequential_image_generation: str | None = Field(
+        None, description="组图模式: auto 开启"
+    )
+    generation_count: int | None = Field(1, ge=1, le=5, description="生成数量: 1-5")
+
+
+class ApiImageGenerateDataItem(BaseModel):
+    """单张图片结果。"""
+
+    url: str | None = None
+    b64_json: str | None = None
+    size: str | None = None
+    output_format: str | None = None
+
+
+class ApiImageGenerateResponse(BaseModel):
+    """图片生成响应（同步返回）。"""
+
+    created: int
+    data: list[ApiImageGenerateDataItem]
+    model: str