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/Settings.cs

@@ -1466,6 +1466,13 @@ namespace MinecraftClient
                         ChatBots.ItemsCollector.Config.OnSettingUpdate();
                     }
                 }
+
+                [TomlPrecedingComment("$ChatBot.DiscordRpc$")]
+                public ChatBots.DiscordRpc.Configs DiscordRpc
+                {
+                    get { return ChatBots.DiscordRpc.Config; }
+                    set { ChatBots.DiscordRpc.Config = value; ChatBots.DiscordRpc.Config.OnSettingUpdate(); }
+                }
             }
         }