[build] 更新构建流程，递归获取子模块并删除 server-status-web 子模块配置

.github/workflows/build.yml

@@ -26,6 +26,9 @@ jobs:
     steps:
       - name: Checkout code
         uses: actions/checkout@v3
+        with:
+          submodules: recursive
+          fetch-depth: 0
 
       - name: Setup Go
         uses: actions/setup-go@v3

.gitmodules

@@ -1,3 +0,0 @@
-[submodule "server-status-web"]
-	path = server-status-web
-	url = https://github.com/snowykami/server-status-web