feat(project): 运行用户支持自定义输入 (#1323)

* Initial plan

* feat(project): 运行用户选择器支持自定义输入

为创建项目和编辑项目的"运行用户"选择器添加 filterable 和 tag 属性，
使用户可以在选择预设用户（www/root/nobody）的同时也能输入自定义用户名。

Co-authored-by: devhaozi <115467771+devhaozi@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: devhaozi <115467771+devhaozi@users.noreply.github.com>

web/src/views/project/CreateModal.vue

@@ -551,7 +551,9 @@ const modalTitle = computed(() => {
             { label: 'root', value: 'root' },
             { label: 'nobody', value: 'nobody' }
           ]"
-          :placeholder="$gettext('Select User')"
+          :placeholder="$gettext('Select or enter user')"
+          filterable
+          tag
           @keydown.enter.prevent
         />
         <template #feedback>

web/src/views/project/EditModal.vue

@@ -237,7 +237,9 @@ const handleSave = async () => {
                   { label: 'root', value: 'root' },
                   { label: 'nobody', value: 'nobody' }
                 ]"
-                :placeholder="$gettext('Select User')"
+                :placeholder="$gettext('Select or enter user')"
+                filterable
+                tag
                 @keydown.enter.prevent
               />
             </n-form-item>