游戏内再次封装saveFile和loadFile函数

原本的FILE模块更独立，不基于全局text变量和报错信息而是直接报错

parts/language/lang_en.lua

@@ -67,11 +67,19 @@ return{
     switchSpawnSFX="Please turn on the block spawn SFX!",
     needRestart="Restart to apply all changes",
 
+    loadError_errorMode="'$1' loading failed: no load mode '$2'",
+    loadError_read="'$1' loading failed: read failed",
+    loadError_noFile="'$1' loading failed no file:",
+    loadError_other="'$1' loading failed: $2",
+    loadError_unknown="'$1' loading failed: unknown reason",
+
+    saveError_duplicate="'$1' saving failed: duplicated filename",
+    saveError_encode="'$1' saving failed: encode failed",
+    saveError_other="'$1' saving failed: $2",
+    saveError_unknown="'$1' saving failed: unknown reason",
+
     copyDone="Copied!",
     saveDone="Data saved",
-    saveError="Failed to save:",
-    saveError_duplicate="Duplicated filename",
-    loadError="Failed to load:",
     exportSuccess="Exported successfully",
     importSuccess="Imported successfully",
     dataCorrupted="Data corrupted",