Refactor HTML Injection Form Component (halo-sigs#12)

#### What type of PR is this?
/kind improvement
#### What this PR does / why we need it:
原来的注入表单组件`HtmlInjectionAdd`把新增和更改的逻辑混在一起了，
该PR删除了该组件并拆分成`HtmlInjectionForm`,`HtmlInjectionCreationModal`和`HtmlInjectionEditionModal`分别用于渲染表单，新增注入和修改注入
#### Which issue(s) this PR fixes:
Fixes halo-sigs#7 
#### Does this PR introduce a user-facing change?
```release-note
None
```

ui/src/views/HtmlInjectionCreationModal.vue

@@ -0,0 +1,58 @@
+<script setup lang="ts">
+import HtmlInjectionForm from './HtmlInjectionForm.vue';
+import {axiosInstance} from "@halo-dev/api-client";
+import {VButton, VModal, VSpace} from '@halo-dev/components';
+import type {HtmlInjection, HtmlInjectionSpec} from "@/types";
+
+const props = defineProps<{
+  htmlInjection: HtmlInjection | null;
+}>();
+
+const emit = defineEmits(['close', 'success']);
+
+function closeModal() {
+  emit('close');
+}
+
+function handleFormSubmit(formData: HtmlInjectionSpec) {
+  const requestData: HtmlInjection = {
+    apiVersion: 'theme.halo.run/v1alpha1',
+    kind: 'HtmlInjection',
+    metadata: {
+      name: '',
+      generateName: 'htmlinjection-',
+    },
+    spec: formData,
+  };
+  axiosInstance.post('/apis/theme.halo.run/v1alpha1/htmlinjections', requestData)
+      .then(() => {
+        emit('success');
+        closeModal();
+      })
+      .catch(error => {
+        console.error('Error creating html injection:', error);
+      });
+}
+</script>
+
+<template>
+  <VModal
+      :title="'新增代码注入'"
+      :width="700"
+      @close="closeModal"
+  >
+    <HtmlInjectionForm
+        :htmlInjection="props.htmlInjection"
+        @submit="handleFormSubmit"/>
+    <template #footer>
+      <VSpace>
+        <!-- @vue-ignore -->
+        <VButton type="secondary" @click="$formkit.submit('html-injection-form')">保存</VButton>
+        <VButton @click="closeModal">取消</VButton>
+      </VSpace>
+    </template>
+  </VModal>
+</template>
+<style>
+@import "@halo-dev/components/dist/style.css";
+</style>

ui/src/views/HtmlInjectionEditionModal.vue

@@ -0,0 +1,52 @@
+<script setup lang="ts">
+import HtmlInjectionForm from './HtmlInjectionForm.vue';
+import {axiosInstance} from "@halo-dev/api-client";
+import {VButton, VModal, VSpace} from '@halo-dev/components';
+import type {HtmlInjection, HtmlInjectionSpec} from "@/types";
+
+
+const props = defineProps<{
+  htmlInjection: HtmlInjection | null;
+}>();
+
+const emit = defineEmits(['close', 'success']);
+
+function closeModal() {
+  emit('close');
+}
+
+function handleFormSubmit(formData: HtmlInjectionSpec) {
+  const htmlInjection = props.htmlInjection as HtmlInjection;
+  const requestData: HtmlInjection = {...htmlInjection, spec: formData};
+  axiosInstance.put(`/apis/theme.halo.run/v1alpha1/htmlinjections/${htmlInjection.metadata?.name}`, requestData)
+    .then(() => {
+      emit('success');
+      closeModal();
+    })
+    .catch(error => {
+      console.error('Error updating html injection:', error);
+    });
+}
+</script>
+
+<template>
+  <VModal
+    :title="'编辑代码注入'"
+    :width="700"
+    @close="closeModal"
+  >
+    <HtmlInjectionForm
+      :htmlInjection="props.htmlInjection"
+      @submit="handleFormSubmit"/>
+    <template #footer>
+      <VSpace>
+        <!-- @vue-ignore -->
+        <VButton type="secondary" @click="$formkit.submit('html-injection-form')">保存</VButton>
+        <VButton @click="closeModal">取消</VButton>
+      </VSpace>
+    </template>
+  </VModal>
+</template>
+<style>
+@import "@halo-dev/components/dist/style.css";
+</style>

ui/src/views/HtmlInjectionForm.vue

@@ -0,0 +1,88 @@
+<script setup lang="ts">
+import {ref, watch} from 'vue';
+import type {HtmlInjection, HtmlInjectionSpec} from "@/types";
+import {cloneDeep} from "lodash-es";
+
+const props = defineProps<{
+  htmlInjection: HtmlInjection | null;
+}>();
+
+const emit = defineEmits<{
+  (event: "submit", data: HtmlInjectionSpec): void;
+}>();
+
+// 初始化表单数据
+const initialFormData = {
+  name: '',
+  description: '',
+  fragment: '',
+  injectionPoint: 'HEADER' as 'HEADER' | 'FOOTER',
+  pageRules: [] as string[],
+  enabled: false,
+};
+
+const formData = ref(cloneDeep(initialFormData));
+
+// 更新表单数据
+const updateFormData = (currentHtmlInjection: HtmlInjection | null) => {
+  if (currentHtmlInjection) {
+    formData.value = {
+      name: currentHtmlInjection.spec.name,
+      description: currentHtmlInjection.spec.description,
+      fragment: currentHtmlInjection.spec.fragment,
+      injectionPoint: currentHtmlInjection.spec.injectionPoint,
+      pageRules: currentHtmlInjection.spec.pageRules,
+      enabled: currentHtmlInjection.spec.enabled,
+    };
+  }
+};
+
+// 监听 props.htmlInjection 的变化并相应更新 formData
+watch(
+  () => props.htmlInjection,
+  updateFormData,
+  {immediate: true}
+);
+
+// 提交表单
+function onSubmit(formData: HtmlInjectionSpec) {
+  // 触发 submit 事件并传递表单数据
+  emit('submit', formData);
+}
+</script>
+
+<template>
+  <FormKit
+    type="form"
+    id="html-injection-form"
+    name="html-injection-form"
+    v-model="formData"
+    :config="{ validationVisibility: 'submit'}"
+    :actions="false"
+    @submit="onSubmit"
+  >
+    <FormKit id="name" name="name" v-model="formData.name" :label="'名称'" type="text"
+             validation="required|length:1,100" :placeholder="'请输入名称'"/>
+    <FormKit id="description" name="description" v-model="formData.description" :label="'代码描述'" type="textarea"
+             validation="length:0,500" :placeholder="'请输入代码描述'"/>
+    <FormKit id="injectionPoint" name="injectionPoint" v-model="formData.injectionPoint" :label="'注入点'" type="select"
+             :options="[
+        { value: 'HEADER', label: 'Header' },
+        { value: 'FOOTER', label: 'Footer' }
+      ]"
+    />
+    <FormKit id="pageRules" name="pageRules" v-model="formData.pageRules" :label="'页面匹配规则'" validation="required"
+             type="list" item-type="string" add-label="添加">
+      <template #default="{ index }">
+        <FormKit type="text" :index="index" help="用于匹配页面路径的符合 Ant-style 的表达式，如：/archives/**"/>
+      </template>
+    </FormKit>
+    <FormKit id="enabled" name="enabled" v-model="formData.enabled" :label="'启用'" type="checkbox"/>
+    <FormKit id="fragment" name="fragment" v-model="formData.fragment" :label="'代码'" type="code" :language="'html'"
+             :height="'200px'"/>
+  </FormKit>
+</template>
+
+<style>
+@import "@halo-dev/components/dist/style.css";
+</style>