feat(builder): add dynamic blocks email and dnd packages

packages/blocks/package.json

@@ -0,0 +1,21 @@
+{
+  "name": "@wrnexus/blocks",
+  "version": "0.1.0",
+  "type": "module",
+  "description": "Pure dynamic block document engine for WRNexus builders.",
+  "exports": {
+    ".": "./src/index.ts"
+  },
+  "files": [
+    "src",
+    "README.md"
+  ],
+  "scripts": {
+    "test": "bun test",
+    "typecheck": "tsc --noEmit"
+  },
+  "devDependencies": {
+    "@types/bun": "^1.4.0",
+    "typescript": "^6.0.3"
+  }
+}