workflow底层UI库整合至项目，优化构建逻辑

easyflow-ui-admin/packages/tinyflow-ui/src/components/nodes/index.ts

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+import type {NodeTypes} from '@xyflow/svelte';
+import StartNode from './StartNode.svelte';
+import EndNode from './EndNode.svelte';
+import LLMNode from './LLMNode.svelte';
+import CodeNode from './CodeNode.svelte';
+import TemplateNode from './TemplateNode.svelte';
+import HttpNode from './HttpNode.svelte';
+import KnowledgeNode from './KnowledgeNode.svelte';
+import SearchEngineNode from './SearchEngineNode.svelte';
+import LoopNode from './LoopNode.svelte';
+import ConfirmNode from './ConfirmNode.svelte';
+
+/**
+ * @description 节点类型（en: node type）
+ */
+export const nodeTypes = {
+    startNode: StartNode,
+    codeNode: CodeNode,
+    confirmNode: ConfirmNode,
+    llmNode: LLMNode,
+    templateNode: TemplateNode,
+    httpNode: HttpNode,
+    knowledgeNode: KnowledgeNode,
+    searchEngineNode: SearchEngineNode,
+    loopNode: LoopNode,
+    endNode: EndNode
+} as any as NodeTypes;