Move Events methods to namespace

[ramon-bernardo]

Pull Request Prelude

• [x] I have followed proper The Forgotten Server code styling.
• [x] I have read and understood the contribution guidelines before making this PR.
• [x] I am aware that this PR may be closed if the above-mentioned criteria are not fulfilled.

Changes Proposed

• Move Events methods to namespace.

[MillhioreBT]

@ranisalt to what extent is it good to use namespace to handle all singletons? I personally like namespaces, but is it in its main function? Anyway, I can't think of any other idea.

[ranisalt]

to what extent is it good to use namespace to handle all singletons?

Singletons are ~almost~ always a bad idea. Namespaces are an enhanced private section in a class, since you hide the implementation details and the compiler can assume it's not visible and perform more aggressive optimizations.

I like this post on how singletons are an awful idea in general. Namespaces don't solve it, but they make it less bad.