Add gitlens to vscode extentions (#31)

Co-authored-by: hiifong <i@hiif.ong>
Reviewed-on: https://gitea.com/gitea/gitea-mcp/pulls/31
Reviewed-by: hiifong <i@hiif.ong>
Co-authored-by: yp05327 <576951401@qq.com>
Co-committed-by: yp05327 <576951401@qq.com>

.devcontainer/devcontainer.json

@@ -11,7 +11,8 @@
         "golang.go",
         "stylelint.vscode-stylelint",
         "DavidAnson.vscode-markdownlint",
-        "github.copilot"
+        "github.copilot",
+        "eamodio.gitlens"
       ]
     }
   }