fix: .gitignore + add 44 language JSON files

languages/bn.json

@@ -0,0 +1,25 @@
+{
+  "app_title": "Lity3D সম্পাদক",
+  "file": "ফাইল",
+  "build": "বিল্ড",
+  "scene": "দৃশ্য",
+  "help": "সাহায্য",
+  "lang": "ভাষা",
+  "new": "নতুন",
+  "open": "খুলুন",
+  "save": "সংরক্ষণ",
+  "exit": "বের হোন",
+  "run": "খেলা চালান",
+  "compile": "ইঞ্জিন বিল্ড",
+  "package": "EXE প্যাকেজ",
+  "explorer": "এক্সপ্লোরার",
+  "output": "আউটপুট",
+  "ready": "প্রস্তুত",
+  "running": "চলছে...",
+  "saved": "সংরক্ষিত",
+  "opened": "খোলা হয়েছে",
+  "build_first": "প্রথমে বিল্ড করুন",
+  "kill": "বন্ধ",
+  "packaged": "প্যাকেজ করা হয়েছে",
+  "about": "Lity3D সম্পর্কে"
+}