Minor cleanup and fixes

Signed-off-by: Sean Du <do4suki@gmail.com>

internal/utils/serverdata.go

@@ -0,0 +1,16 @@
+package utils
+
+import (
+	"encoding/json"
+	"honoka-chan/pkg/utils"
+	"path/filepath"
+)
+
+const serverDataPath = "assets/serverdata"
+
+func LoadServerData[T any](fileName string) (T, error) {
+	var data T
+	filePath := filepath.Join(serverDataPath, fileName)
+	err := json.Unmarshal([]byte(utils.ReadAllText(filePath)), &data)
+	return data, err
+}