Command System Remake

[GL1TCH1337]

I have removed player chat event based command system and integrated it to CS# command system. By doing this players can change prefix of command by CS# settings and no need to add different prefixes to this plugin config.

This also completely solves issue #128

Since this is a big change. Server owners should configure their config by new default config.

Waiting your feedbacks.

[yonilerner]

I need some time to think about this. Im not sure this is really necessary, maybe I'm not understanding though

[oqyh]

removing StringComparison.OrdinalIgnoreCase

will force people !gunmenu
and will ignore !GuNMenu !GUNMENU

it will lead to open this issue again
#45

not good

[yonilerner]

This PR is more "standard" but it gives less flexibility to the commands themselves, so Im hesitant to change it. Does CS# support case insensitive commands maybe?

[GL1TCH1337]

CS# command system commands work case insensitive. It will work anyways. !GuNs or !GUNS dont matter.

(another plugin of me but uses cs# command system)

[oqyh]

CS# command system commands work case insensitive. It will work anyways. !GuNs or !GUNS dont matter.

(another plugin of me but uses cs# command system)

you removing "gunmenu" ".gunmenu" some people want it without !

[oqyh]

if you want to solve
#128
you can just change

if (CenterMenuCommands.Any(cmd => cmd.Equals(message, StringComparison.OrdinalIgnoreCase)))
to
if (CenterMenuCommands.Any(cmd => cmd.Equals(message.TrimStart('/'), StringComparison.OrdinalIgnoreCase)))