- 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/Utility/Services/VerboseErrorsService.cs

@@ -1,5 +1,4 @@
-using NadekoBot.Common.Collections;
-using NadekoBot.Modules.Help.Services;
+using NadekoBot.Modules.Help.Services;
 using NadekoBot.Db;
 
 namespace NadekoBot.Modules.Utility.Services;