[Suggestion] Features for ox_lib callback functions

[emanueldev1]

Option to obtain self in a callback which has the information of which resource invoked the callback and the possibility of making a private callback that can only be executed by the same resource

[thelindat]

Unlike this in JS you must explicitly pass self as an argument (using : is just sugar syntax). That would be a breaking change, requiring syntax changes and offsetting all parameters. As-is, callbacks don't even construct a table that could be used as self.

I have considered deprecating the current callbacks in favour of a more appropriately named RPC module, but no planning has been done on that front.