✨ 新增BFI汇率查询接口并完善结算单合同币种传递

- 新增BfiExchangeRateController: 提供/bfi/exchange-rate接口按币种和日期查询BFI汇率
- blade-transport/pom.xml: 添加blade-bfi-api依赖
- blade-transport/application.yml: 新建配置文件加载Nacos公共配置
- blade-transport/application-dev.yml: 简化配置，数据源等已在Nacos统一管理
- PreSettlementServiceImpl: contractOptions返回中增加settlementCurrency字段

blade-service/blade-transport/src/main/resources/application.yml

@@ -0,0 +1,29 @@
+server:
+  port: 8110
+
+spring:
+  application:
+    name: blade-transport
+  config:
+    import:
+      - nacos:blade.yaml?group=DEFAULT_GROUP&refreshEnabled=true
+      - nacos:blade-${spring.profiles.active}.yaml?group=DEFAULT_GROUP&refreshEnabled=true
+      - optional:nacos:${spring.application.name}-${spring.profiles.active}.yaml?group=DEFAULT_GROUP&refreshEnabled=true
+  cloud:
+    nacos:
+      username: ${NACOS_USERNAME:${NACOS_PROD_USERNAME:nacos}}
+      password: ${NACOS_PASSWORD:${NACOS_PROD_PASSWORD:nacos}}
+      server-addr: ${NACOS_HOST:${NACOS_PROD_HOST:127.0.0.1:8848}}
+      discovery:
+        namespace: "${NACOS_NAMESPACE:}"
+      config:
+        file-extension: yaml
+        namespace: "${NACOS_NAMESPACE:}"
+  datasource:
+    url: ${blade.datasource.${spring.profiles.active}.url}
+    username: ${blade.datasource.${spring.profiles.active}.username}
+    password: ${blade.datasource.${spring.profiles.active}.password}
+
+logging:
+  level:
+    org.springblade.thirdparty.bfi.feign.IBfiClient: DEBUG