fix: 修复项目管理页面新增项目API调用错误

- 将addProject改为submitProject，匹配后端API端点/martial/project/submit

src/views/martial/project/index.vue

@@ -488,7 +488,7 @@ import {
 } from '@element-plus/icons-vue'
 import {
   getProjectList,
-  addProject,
+  submitProject,
   updateProject,
   removeProject,
   importProjects,
@@ -730,7 +730,7 @@ const handleSubmit = async () => {
           await updateProject(form)
           ElMessage.success('修改成功')
         } else {
-          await addProject(form)
+          await submitProject(form)
           ElMessage.success('新增成功')
         }
         dialogVisible.value = false