feat(subspecialist): add detail view and position management

- Implement detail view for subspecialist with specialist relation
- Add position management functionality including CRUD operations
- Create new components for detail display and position listing
- Update service to handle position-related requests
- Include employee selection for position assignments

app/models/subspecialist.ts

@@ -1,9 +1,11 @@
-import { type Base, genBase } from "./_base"
-
+import { type Base, genBase } from './_base'
+import { type Specialist } from './specialist'
 export interface Subspecialist extends Base {
   code: string
   name: string
   specialist_id?: number | string | null
+
+  specialist?: Specialist | null
 }
 
 export function genSubspecialist(): Subspecialist {
@@ -11,6 +13,6 @@ export function genSubspecialist(): Subspecialist {
     ...genBase(),
     code: '',
     name: '',
-    specialist_id: 0
+    specialist_id: 0,
   }
 }