Add Discord Rich Presence ChatBot integration

- Add DiscordRichPresence NuGet package (v1.143.0)
- Create DiscordRpc.cs ChatBot with configurable presence display
- Wire config in Settings.cs ChatBotConfig class
- Register bot in McClient.cs RegisterBots()
- Add translation strings to Translations.resx and Designer
- Add config comments to ConfigComments.resx and Designer
- Support placeholders: {server_host}, {server_port}, {username},
  {health}, {max_health}, {food}, {dimension}, {gamemode},
  {x}, {y}, {z}, {player_count}, {protocol}

Co-authored-by: milutinke <441903+milutinke@users.noreply.github.com>
Agent-Logs-Url: https://github.com/MCCTeam/Minecraft-Console-Client/sessions/43388021-4264-47e6-8403-7a1bca66d86f

MinecraftClient/McClient.cs

@@ -430,6 +430,7 @@ namespace MinecraftClient
             if (Config.ChatBot.ScriptScheduler.Enabled) { BotLoad(new ScriptScheduler()); }
             if (Config.ChatBot.TelegramBridge.Enabled) { BotLoad(new TelegramBridge()); }
             if (Config.ChatBot.ItemsCollector.Enabled) { BotLoad(new ItemsCollector()); }
+            if (Config.ChatBot.DiscordRpc.Enabled) { BotLoad(new DiscordRpc()); }
             if (!string.IsNullOrEmpty(Environment.GetEnvironmentVariable("MCC_FILE_INPUT")))
                 BotLoad(new FileInputBot());
         }