feat: Add ListModelController for CRUD operations

src/main/java/com/example/demo/controller/ListModelController.java

@@ -0,0 +1,46 @@
+package com.example.demo.controller;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.*;
+import com.example.demo.service.ListModelService;
+import com.example.demo.entity.ListModel;
+import java.util.List;
+import java.util.Optional;
+
+@RestController
+@RequestMapping("/listModels")
+public class ListModelController {
+
+    private final ListModelService listModelService;
+
+    @Autowired
+    public ListModelController(ListModelService listModelService) {
+        this.listModelService = listModelService;
+    }
+
+    @GetMapping
+    public List<ListModel> findAll() {
+        return listModelService.findAll();
+    }
+
+    @GetMapping("/{id}")
+    public Optional<ListModel> findById(@PathVariable Long id) {
+        return listModelService.findById(id);
+    }
+
+    @PostMapping
+    public ListModel create(@RequestBody ListModel listModel) {
+        return listModelService.save(listModel);
+    }
+
+    @PutMapping("/{id}")
+    public ListModel update(@PathVariable Long id, @RequestBody ListModel listModel) {
+        listModel.setId(id);
+        return listModelService.save(listModel);
+    }
+
+    @DeleteMapping("/{id}")
+    public void delete(@PathVariable Long id) {
+        listModelService.deleteById(id);
+    }
+}