Add Token Validation

The program will now report an invalid token with a single log line and stop the application

Bot.cs

@@ -1,5 +1,3 @@
-using System;
-using System.Diagnostics;
 using Discord;
 using Discord.WebSocket;
 using Microsoft.Extensions.Hosting;
@@ -21,8 +19,36 @@ public async Task StartAsync(CancellationToken cancellationToken)
 		_client.Log += AutoLog.LogMessage;
 		_client.Ready += OnReadyAsync;
 
-		await _client.LoginAsync(TokenType.Bot, _discordConfig.Token);
-		await _client.StartAsync();
+		// Try-catch ValidateToken since LoginAsync doesn't throw exceptions, they just catch them
+		// So there's no way to know if the token is invalid without checking it first (or is there?)
+		// Also this is separate from the other try-catch to make sure it's the token that's invalid
+		try
+		{
+			TokenUtils.ValidateToken(TokenType.Bot, _discordConfig.Token);
+		}
+		catch (ArgumentException e)
+		{
+			Log.Fatal("{e}", e.Message);
+			Environment.ExitCode = 1;
+			_appLifetime.StopApplication();
+			return; // The app would normally continue for a short amount of time before stopping
+		}
+
+		// Most of the exceptions are caught by the library :( [maybe not idk i'm writing this at 2am]
+		// This means that the program will log stuff in an ugly way and NOT stop the program on fatal errors
+		try
+		{
+			// The token is already validated, so there's no need to validate it again
+			await _client.LoginAsync(TokenType.Bot, _discordConfig.Token, validateToken: false);
+			await _client.StartAsync();
+		}
+		catch (Exception e)
+		{
+			Log.Fatal("Failed to start the bot: {e}", e);
+			Environment.ExitCode = 1;
+			_appLifetime.StopApplication();
+			return;
+		}
 
 		// Custom activities use a different method
 		if (_discordConfig.StatusType == ActivityType.CustomStatus)