fix: comprehensive stub fixes for compilation - add missing fields, methods, service interfaces

- Add missing entity fields (withdrawTime, withdrawBy, visitNo, patientName, bookedNum, execStatus, etc.)
- Add missing mapper methods (selectByPrimaryKey, selectByOrderId, updateById, etc.)
- Fix R.java to be generic with ok() method
- Fix PageResult with proper getters/setters
- Add missing service interfaces in all web modules
- Fix QueueQueryDto type mismatch
- Fix OrderServiceImpl to use String constants directly
- Fix OutpatientRegistrationServiceImpl int/String status
- Fix OrderVerificationServiceImpl import and interface
- Add AdmScheduleSlot entity, fix mappers

openhis-server-new/openhis-application/src/main/java/com/openhis/web/system/service/DictService.java

@@ -0,0 +1,5 @@
+package com.openhis.web.system.service;
+
+public interface DictService {
+    String getDictLabel(String dictType, String dictValue);
+}

openhis-server-new/openhis-application/src/main/java/com/openhis/web/system/service/SysConfigService.java

@@ -0,0 +1,5 @@
+package com.openhis.web.system.service;
+
+public interface SysConfigService {
+    String getConfigValue(String key);
+}