feat(game): add game Chilvary 2

[podrivo]

Add Chivalry 2

Adds support for Chivalry 2 as a Valve (A2S) game.

Changes

• Add chivalry2 game entry (valve protocol, game port 7777, query port 7071)
• Add CHANGELOG.md entry
• Document Chivalry 2's known server-side quirks in GAMES_LIST.md:
  • reports an incorrect appId (100), a limitation of the 16-bit A2S field that can't hold the real appId (1824220)
  • truncates player names containing non-ASCII characters (e.g. SŦĐ Eureka → SŦĐ Eure)

Closes #780

Example

gamedig --type chivalry2 --pretty XX.XXX.XXX.XX:XXXXX

{
  "name": "[NA 64] Tempest Realm TO | Casual Nights | discord.gg/tempest",
  "map": "TO_RudhelmSiege",
  "password": false,
  "raw": {
    "protocol": 85,
    "folder": "TO",
    "game": "Chivalry 2",
    "appId": 100,
    "numbots": 0,
    "listentype": "D",
    "environment": "L",
    "secure": 1,
    "players": [
      { "name": "ironhalbert", "score": 0, "time": 1487.553955078125 },
      { "name": "GallowGrin", "score": 0, "time": 1322.094482421875 },
      { "name": "ŦĐ Vanguard", "score": 0, "time": 1190.741210937500 },
      { "name": "δσχ reaper", "score": 0, "time": 998.328125000000 },
      { "name": "ØscarMike", "score": 0, "time": 742.661376953125 },
      { "name": "DK - mason-7741", "score": 0, "time": 503.927734375000 },
      { "name": "Brynjar", "score": 0, "time": 311.204864501953 },
      { "name": "kettle_knight", "score": 0, "time": 87.442192077637 }
    ]
  },
  "version": "261891",
  "maxplayers": 64,
  "numplayers": 58,
  "queryPort": XXXXX,
  "connect": "XX.XXX.XXX.XX:XXXXX",
  "ping": 142
}

Player list trimmed for brevity.

[oppsig]

Could you remove our ip from the example ?

[podrivo]

Updated!