docs: add initial important release notes

Author: fangsmile

docs/assets/changelog/en/important-release.md

@@ -0,0 +1,11 @@
+# v0.1.0
+
+## Important Release
+
+- Release VGraph.
+
+## Packages
+
+- [`@visactor/vgraph`](https://www.npmjs.com/package/@visactor/vgraph)
+- [`@visactor/react-vgraph`](https://www.npmjs.com/package/@visactor/react-vgraph)
+- [`@visactor/react-vgraph-ui`](https://www.npmjs.com/package/@visactor/react-vgraph-ui)

docs/assets/changelog/zh/important-release.md

@@ -0,0 +1,11 @@
+# v0.1.0
+
+## 重大版本
+
+- 发布 VGraph。
+
+## 相关包
+
+- [`@visactor/vgraph`](https://www.npmjs.com/package/@visactor/vgraph)
+- [`@visactor/react-vgraph`](https://www.npmjs.com/package/@visactor/react-vgraph)
+- [`@visactor/react-vgraph-ui`](https://www.npmjs.com/package/@visactor/react-vgraph-ui)