feat(pricing): add price field to pricing API response

.env.example

@@ -55,6 +55,13 @@
 # 会话密钥
 # SESSION_SECRET=random_string
 
+# Hydra OAuth Provider
+# HYDRA_ENABLED=true
+# Hydra admin (internal) URL
+# HYDRA_ADMIN_URL=http://127.0.0.1:4445
+# Hydra public URL (proxied by new-api)
+# HYDRA_PUBLIC_URL=http://127.0.0.1:4444
+
 # 其他配置
 # 生成默认token
 # GENERATE_DEFAULT_TOKEN=false