fix: .gitignore + add 44 language JSON files

languages/de.json

@@ -0,0 +1,25 @@
+{
+  "app_title": "Lity3D Editor",
+  "file": "Datei",
+  "build": "Erstellen",
+  "scene": "Szene",
+  "help": "Hilfe",
+  "lang": "Sprache",
+  "new": "Neu",
+  "open": "Öffnen",
+  "save": "Speichern",
+  "exit": "Beenden",
+  "run": "Spiel starten",
+  "compile": "Engine erstellen",
+  "package": "Paketieren",
+  "explorer": "Explorer",
+  "output": "Ausgabe",
+  "ready": "Bereit",
+  "running": "Läuft...",
+  "saved": "Gespeichert",
+  "opened": "Geöffnet",
+  "build_first": "Erst bauen",
+  "kill": "Gestoppt",
+  "packaged": "Paketiert",
+  "about": "Über Lity3D"
+}