chore: 移除 Changesets 配置文件及相关文档

不再使用 Changesets 进行版本管理，因此删除其配置文件 config.json 和说明文档 README.md。

.changeset/README.md

@@ -1,5 +0,0 @@
-# Changesets
-
-Hello and welcome! This folder has been automatically generated by `@changesets/cli`, a build tool that works with multi-package repos, or single-package repos to help you version and publish your code. You can find the full documentation for it [in our repository](https://github.com/changesets/changesets)
-
-We have a quick list of common questions to get you started engaging with this project in [our documentation](https://github.com/changesets/changesets/blob/main/docs/common-questions.md)

.changeset/config.json

@@ -1,18 +0,0 @@
-{
-  "$schema": "https://unpkg.com/@changesets/config@3.0.0/schema.json",
-  "changelog": [
-    "@changesets/changelog-github",
-    { "repo": "vbenjs/vue-vben-admin" }
-  ],
-  "commit": false,
-  "fixed": [["@vben-core/*", "@vben/*"]],
-  "snapshot": {
-    "prereleaseTemplate": "{tag}-{datetime}"
-  },
-  "privatePackages": { "version": true, "tag": true },
-  "linked": [],
-  "access": "public",
-  "baseBranch": "main",
-  "updateInternalDependencies": "patch",
-  "ignore": []
-}