build(core): 更新 composer.json

- 修改项目名称从 "sixshop/core" 为 "six-shop/core"- 更新命名空间前缀从 "Sixshop" 为 "SixShop"
- 添加 topthink/framework 依赖

composer.json

@@ -1,10 +1,10 @@
 {
-    "name": "sixshop/core",
+    "name": "six-shop/core",
     "description": "核心扩展",
     "license": "MIT",
     "autoload": {
         "psr-4": {
-            "Sixshop\\Core\\": "src/"
+            "SixShop\\Core\\": "src/"
         },
         "files": [
             "src/helper.php"
@@ -17,6 +17,7 @@
         }
     ],
     "require": {
-        "php": ">=8.3"
+        "php": ">=8.3",
+        "topthink/framework": "^8.1"
     }
 }