Added usePrivilegedIntents to creds.yml as an option for users who don't have them enabled

Added an explanation on how to enable intents if the bot doesn't have them and fails to login

src/NadekoBot/Common/Creds.cs

@@ -14,12 +14,15 @@ public sealed class Creds : IBotCredentials
     [Comment(@"List of Ids of the users who have bot owner permissions
 **DO NOT ADD PEOPLE YOU DON'T TRUST**")]
     public ICollection<ulong> OwnerIds { get; set; }
+    
+    [Comment("Keep this on 'true' unless you're sure your bot shouldn't use privileged intents or you're waiting to be accepted")]
+    public bool UsePrivilegedIntents { get; set; }
 
     [Comment(@"The number of shards that the bot will running on.
 Leave at 1 if you don't know what you're doing.")]
     public int TotalShards { get; set; }
 
-    [Comment(
+    [Comment(   
         @"Login to https://console.cloud.google.com, create a new project, go to APIs & Services -> Library -> YouTube Data API and enable it.
 Then, go to APIs and Services -> Credentials and click Create credentials -> API key.
 Used only for Youtube Data Api (at the moment).")]
@@ -96,8 +99,9 @@ Windows default
 
     public Creds()
     {
-        Version = 3;
+        Version = 4;
         Token = string.Empty;
+        UsePrivilegedIntents = true;
         OwnerIds = new List<ulong>();
         TotalShards = 1;
         GoogleApiKey = string.Empty;

src/NadekoBot/Common/IBotCredentials.cs

@@ -6,6 +6,7 @@ public interface IBotCredentials
     string Token { get; }
     string GoogleApiKey { get; }
     ICollection<ulong> OwnerIds { get; }
+    bool UsePrivilegedIntents { get; }
     string RapidApiKey { get; }
 
     Creds.DbOptions Db { get; }