fix: .gitignore + add 44 language JSON files

languages/th.json

@@ -0,0 +1,25 @@
+{
+  "app_title": "Lity3D ตัวแก้ไข",
+  "file": "ไฟล์",
+  "build": "สร้าง",
+  "scene": "ฉาก",
+  "help": "ช่วยเหลือ",
+  "lang": "ภาษา",
+  "new": "ใหม่",
+  "open": "เปิด",
+  "save": "บันทึก",
+  "exit": "ออก",
+  "run": "รันเกม",
+  "compile": "สร้างเอนจิ้น",
+  "package": "打包 EXE",
+  "explorer": "ตัวสำรวจ",
+  "output": "ผลลัพธ์",
+  "ready": "พร้อม",
+  "running": "กำลังทำงาน...",
+  "saved": "บันทึกแล้ว",
+  "opened": "เปิดแล้ว",
+  "build_first": "สร้างก่อน",
+  "kill": "หยุดแล้ว",
+  "packaged": "打包แล้ว",
+  "about": "เกี่ยวกับ Lity3D"
+}