chore: 修正 LICENSE 版权声明并补充各清单的 license 字段

- LICENSE 附录版权行由模板占位符改为 Copyright 2023-present vnt-dev
- 各 Cargo.toml 与 package.json 补充 license = Apache-2.0

vnt-web/Cargo.toml

@@ -2,6 +2,7 @@
 name = "vnt-web"
 version = "2.0.2"
 edition = "2024"
+license = "Apache-2.0"
 
 [dependencies]
 vnt-core.workspace = true

vnt-web/ui/package.json

@@ -1,6 +1,7 @@
 {
   "name": "vnt-web-ui",
   "private": true,
+  "license": "Apache-2.0",
   "version": "2.0.2",
   "type": "module",
   "scripts": {