Mls4game (#755)

## Description:
I’ve expanded MLS (Multi-Language Support) coverage in the game.
All in-game elements except for chat messages are now translatable.
## Please complete the following:
- [ ] I have added screenshots for all UI updates
- [x] I confirm I have thoroughly tested these changes and take full
responsibility for any bugs introduced
- [x] I understand that submitting code with bugs that could have been
caught through manual testing blocks releases and new features for all
contributors

## Please put your Discord username so you can be contacted if a bug or
regression is found:
aotumuri

resources/lang/en.json

@@ -319,5 +319,78 @@
       "saving_for_mirv": "[P1] is saving up to launch a MIRV.",
       "mirv_ready": "[P1] has enough gold to launch a MIRV!"
     }
+  },
+  "build_menu": {
+    "desc": {
+      "atom_bomb": "Small explosion",
+      "hydrogen_bomb": "Large explosion",
+      "mirv": "Huge explosion, only targets selected player",
+      "missile_silo": "Used to launch nukes",
+      "sam_launcher": "Defends against incoming nukes",
+      "warship": "Captures trade ships, destroys ships and boats",
+      "port": "Sends trade ships to allies to generate gold",
+      "defense_post": "Increase defenses of nearby borders",
+      "city": "Increase max population"
+    },
+    "not_enough_money": "Not enough money"
+  },
+  "win_modal": {
+    "died": "You died",
+    "your_team": "Your team won!",
+    "other_team": "{team} team has won!",
+    "you_won": "You Won!",
+    "other_won": "{player} has won!",
+    "exit": "Exit Game",
+    "keep": "Keep Playing"
+  },
+  "leaderboard": {
+    "title": "Leaderboard",
+    "hide": "Hide",
+    "rank": "Rank",
+    "player": "Player",
+    "owned": "Owned",
+    "gold": "Gold",
+    "troops": "Troops"
+  },
+  "player_info_overlay": {
+    "type": "Type",
+    "bot": "Bot",
+    "nation": "Nation",
+    "player": "Player",
+    "team": "Team",
+    "d_troops": "Defending troops",
+    "a_troops": "Attacking troops",
+    "gold": "Gold",
+    "ports": "Ports",
+    "cities": "Cities",
+    "missile_launchers": "Missile launchers",
+    "sams": "SAMs",
+    "health": "Health",
+    "attitude": "Attitude"
+  },
+  "relation": {
+    "hostile": "Hostile",
+    "distrustful": "Distrustful",
+    "neutral": "Neutral",
+    "friendly": "Friendly",
+    "default": "Default"
+  },
+  "control_panel": {
+    "pop": "Pop",
+    "gold": "Gold",
+    "troops": "Troops",
+    "workers": "Workers",
+    "attack_ratio": "Attack Ratio"
+  },
+  "player_panel": {
+    "gold": "Gold",
+    "troops": "Troops",
+    "traitor": "Traitor",
+    "embargo": "Embargo against you",
+    "nuke": "Nukes sent by them to you",
+    "start_trade": "Start trading",
+    "stop_trade": "Stop trading",
+    "yes": "Yes",
+    "no": "No"
   }
 }

resources/lang/ja.json

@@ -319,5 +319,78 @@
       "saving_for_mirv": "[P1]はMIRVを発射するために貯金している。",
       "mirv_ready": "[P1]はMIRVを発射できるだけのお金を持っている！"
     }
+  },
+  "build_menu": {
+    "desc": {
+      "atom_bomb": "小規模な爆発",
+      "hydrogen_bomb": "大規模な爆発",
+      "mirv": "指定したプレイヤーのみを狙う超大規模な爆発",
+      "missile_silo": "核ミサイルの発射に使用される",
+      "sam_launcher": "飛来する核ミサイルを迎撃する",
+      "warship": "貿易船を捕獲し、敵の船やボートを破壊する",
+      "port": "同盟国に貿易船を送り、ゴールドを生成する",
+      "defense_post": "近くの国境の防御を強化する",
+      "city": "最大人口を増加させる"
+    },
+    "not_enough_money": "資金不足"
+  },
+  "win_modal": {
+    "died": "あなたは死んでしまった",
+    "your_team": "あなたのチームの勝利！",
+    "other_team": "{team}チームが勝利しました。",
+    "you_won": "勝利！",
+    "other_won": "{player}の勝利!",
+    "exit": "ゲームから退出",
+    "keep": "観戦する"
+  },
+  "leaderboard": {
+    "title": "ランキング",
+    "hide": "隠す",
+    "rank": "順位",
+    "player": "プレイヤー",
+    "owned": "領土",
+    "gold": "ゴールド",
+    "troops": "兵士"
+  },
+  "player_info_overlay": {
+    "type": "タイプ",
+    "bot": "ボット",
+    "nation": "国家",
+    "player": "プレイヤー",
+    "team": "チーム",
+    "d_troops": "防衛兵士数",
+    "a_troops": "攻撃兵士数",
+    "gold": "資金",
+    "ports": "港",
+    "cities": "都市",
+    "missile_launchers": "ミサイル格納庫",
+    "sams": "SAM",
+    "health": "体力",
+    "attitude": "態度"
+  },
+  "relation": {
+    "hostile": "敵対的",
+    "distrustful": "不信",
+    "neutral": "中立",
+    "friendly": "友好的",
+    "default": "デフォルト"
+  },
+  "control_panel": {
+    "pop": "人口",
+    "gold": "資金",
+    "troops": "兵士",
+    "workers": "労働者",
+    "attack_ratio": "攻撃比率"
+  },
+  "player_panel": {
+    "gold": "資金",
+    "troops": "兵士",
+    "traitor": "裏切り者かどうか",
+    "embargo": "あなたへの禁輸措置があるかどうか",
+    "nuke": "相手からあなたへの核攻撃数",
+    "start_trade": "貿易を開始",
+    "stop_trade": "貿易を停止",
+    "yes": "はい",
+    "no": "いいえ"
   }
 }