feat: 重构工作流组件，动态加载节点类型，移除旧的侧边栏和背景组件

src/components/workflow/FetchRssAction.vue

@@ -0,0 +1,22 @@
+<script setup lang="ts">
+const props = defineProps({
+  id: {
+    type: String,
+    required: true,
+  },
+  data: {
+    type: Object,
+    required: true,
+  },
+})
+</script>
+<template>
+  <VCard>
+    <VCardItem prepend-icon="mdi-rss-box">
+      <VCardTitle>获取RSS资源</VCardTitle>
+      <VCardSubtitle>请求RSS地址获取数据，并解析为资源列表</VCardSubtitle>
+    </VCardItem>
+    <VDivider />
+    <VCardText></VCardText>
+  </VCard>
+</template>