feat(unit-position): implement crud operations and update ui components

- Add new handler, service, and schema files for unit-position
- Update list configuration and entry form components
- Modify page title and integrate employee relation
- Implement CRUD operations with proper validation

app/handlers/unit-position.handler.ts

@@ -0,0 +1,24 @@
+// Handlers
+import { genCrudHandler } from '~/handlers/_handler'
+
+// Services
+import { create, update, remove } from '~/services/unit-position.service'
+
+export const {
+  recId,
+  recAction,
+  recItem,
+  isReadonly,
+  isProcessing,
+  isFormEntryDialogOpen,
+  isRecordConfirmationOpen,
+  onResetState,
+  handleActionSave,
+  handleActionEdit,
+  handleActionRemove,
+  handleCancelForm,
+} = genCrudHandler({
+  create,
+  update,
+  remove,
+})