refactor(core): migrate ai preset to AFFiNE (#7219)

## TL;DR
Move `@blocksuite/presets/ai` to AFFiNE. After this PR is merged, you can use AI features from `@affine/core/blocksuite/presets/ai`.

vitest.config.ts

@@ -2,18 +2,38 @@ import { resolve } from 'node:path';
 import { fileURLToPath } from 'node:url';
 
 import { vanillaExtractPlugin } from '@vanilla-extract/vite-plugin';
-import react from '@vitejs/plugin-react-swc';
 import * as fg from 'fast-glob';
+import swc from 'unplugin-swc';
 import { defineConfig } from 'vitest/config';
 
 const rootDir = fileURLToPath(new URL('.', import.meta.url));
 
 export default defineConfig({
   plugins: [
-    react({
-      tsDecorators: true,
-    }),
     vanillaExtractPlugin(),
+    // https://github.com/vitejs/vite-plugin-react-swc/issues/85#issuecomment-2003922124
+    swc.vite({
+      jsc: {
+        preserveAllComments: true,
+        parser: {
+          syntax: 'typescript',
+          dynamicImport: true,
+          tsx: true,
+          decorators: true,
+        },
+        target: 'es2022',
+        externalHelpers: false,
+        transform: {
+          react: {
+            runtime: 'automatic',
+          },
+          useDefineForClassFields: false,
+          decoratorVersion: '2022-03',
+        },
+      },
+      sourceMaps: true,
+      inlineSourcesContent: true,
+    }),
   ],
   assetsInclude: ['**/*.md', '**/*.zip'],
   resolve: {