feat: add travel album OTG import flow

suixinkan/Features/TravelAlbum/Models/TravelAlbumModels.swift

@@ -198,6 +198,19 @@ struct TravelAlbumCreateRequest: Encodable, Sendable, Equatable {
     }
 }
 
+/// 旅拍相册素材上传登记请求体，对齐 Android `TravelAlbumUploadMaterialRequest`。
+struct TravelAlbumUploadMaterialRequest: Encodable, Sendable, Equatable {
+    let userEquityTravelId: Int
+    let fileName: String
+    let fileUrl: String
+
+    enum CodingKeys: String, CodingKey {
+        case userEquityTravelId = "user_equity_travel_id"
+        case fileName = "file_name"
+        case fileUrl = "file_url"
+    }
+}
+
 /// 旅拍相册通用分页响应。
 struct TravelAlbumListResponse<Item: Decodable & Sendable & Equatable>: Decodable, Sendable, Equatable {
     let total: Int