feat(common): add blocksuite reader lib (#11955)

close CLOUD-202

packages/common/reader/esbuild.config.js

@@ -0,0 +1,23 @@
+import fs from 'node:fs/promises';
+import path from 'node:path';
+
+import { build } from 'esbuild';
+
+const result = await build({
+  entryPoints: ['./src/index.ts'],
+  bundle: true,
+  platform: 'node',
+  outdir: 'dist',
+  target: 'es2024',
+  sourcemap: true,
+  format: 'esm',
+  external: ['yjs'],
+  metafile: true,
+});
+
+if (process.env.METAFILE) {
+  await fs.writeFile(
+    path.resolve(`metafile-${Date.now()}.json`),
+    JSON.stringify(result.metafile, null, 2)
+  );
+}