- 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/Db/Models/AntiProtection.cs

@@ -57,9 +57,7 @@ public class AntiSpamIgnore : DbEntity
     public override int GetHashCode() => ChannelId.GetHashCode();
 
     public override bool Equals(object obj)
-    {
-        return obj is AntiSpamIgnore inst
+        => obj is AntiSpamIgnore inst
             ? inst.ChannelId == ChannelId
             : false;
-    }
 }