- More code cleanup and codestyle updates

- Fixed some possible nullref exceptions
- Methods signatures now have up to 3 parameters before breakaing down each parameter in a separate line
- Method invocations have the same rule, except the first parameter will be in the same line as the invocation to prevent some ugliness when passing lambas as arguments
- Applied many more codestyles
- Extensions folder fully reformatted

src/NadekoBot/Modules/Games/Common/TicTacToe.cs

@@ -9,7 +9,7 @@ public class TicTacToe
     {
         public void NormalizeOptions()
         {
-            if (TurnTimer < 5 || TurnTimer > 60)
+            if (TurnTimer is < 5 or > 60)
                 TurnTimer = 15;
         }
 
@@ -127,7 +127,7 @@ public class TicTacToe
 
     public async Task Start(IGuildUser user)
     {
-        if (_phase == Phase.Started || _phase == Phase.Ended)
+        if (_phase is Phase.Started or Phase.Ended)
         {
             await _channel.SendErrorAsync(_eb, user.Mention + GetText(strs.ttt_already_running)).ConfigureAwait(false);
             return;