chore: init commit from GitHub

TelegramBot/Commands/CommandMessages/ChangelogCommandMessage.cs

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+using System.Text;
+using Telegram.Bot;
+using Telegram.Bot.Types;
+using Telegram.Bot.Types.Enums;
+
+namespace TelegramBot.Commands.CommandMessages;
+
+public class ChangelogCommandMessage : CommandMessage
+{
+    public const string CommandName = "/changelog";
+    public override async Task InvokeFromMessage(ITelegramBotClient botClient, Update update, CancellationToken cancellationToken)
+    {
+        var text = new StringBuilder();
+        foreach (var log in Program.Config.Changelog)
+        {
+            text.Append($"Нововведения от <b>{log.Date}</b>:\n\n{log.Caption}\n\n");
+        }
+        await botClient.SendTextMessageAsync(update.Message?.Chat!, text.ToString(), cancellationToken: cancellationToken, parseMode: ParseMode.Html);
+    }
+}

TelegramBot/Commands/CommandMessages/CommandMessage.cs

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+using System.Diagnostics;
+using System.Reflection;
+using Telegram.Bot;
+using Telegram.Bot.Types;
+
+namespace TelegramBot.Commands.CommandMessages;
+
+public abstract class CommandMessage : IMessage
+{
+    public abstract Task InvokeFromMessage(ITelegramBotClient botClient, Update update,
+        CancellationToken cancellationToken);
+}

TelegramBot/Commands/CommandMessages/StartCommandMessage.cs

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+using System.Diagnostics;
+using System.Reflection;
+using Telegram.Bot;
+using Telegram.Bot.Types;
+
+namespace TelegramBot.Commands.CommandMessages;
+
+public class StartCommandMessage : CommandMessage
+{
+    public const string CommandName = "/start";
+    public override async Task InvokeFromMessage(ITelegramBotClient botClient,
+    Update update,
+        CancellationToken cancellationToken)
+    {
+        var text = Program.Config.StartMessage;
+        text += $"\nBuild assembly version: {FileVersionInfo.GetVersionInfo(Assembly.GetExecutingAssembly().Location).FileVersion}";
+        text += $"\n\nНововведения по комманде /changelog";
+        await botClient.SendTextMessageAsync(update.Message?.Chat!, text, cancellationToken: cancellationToken);
+    }
+}