Split vote code in different files instead of filling ag.sma code

[rtxa]

We can use pawn #include feature like other plugin developers did. Examples:

https://github.com/SmileYzn/PugMod/blob/master/addons/amxmodx/scripting/PugMenus.sma

https://github.com/leobrines/pug_for_cs

https://github.com/SmileYzn/MatchBot/blob/main/MatchBot/MatchVoteMenu.h

More info at https://forum.open.mp/showthread.php?tid=2192

How to use

To split votes in differents files, we need to add in agmodx.sma
#include <agmodx/votes> and create a file named votes

Drawbacks

We loss syntax highlighting and obfuscates what functions or variables the votes are using, no way to locate the references without adding support to AMXXPawn by Klippy. In that case, it would be better to add a new plugin named agmodx_votes.sma, it would be more intuitive and easy for other scripters to look at.

Bonus: Pseudo-members

#if __COMPILER_MODIFIED
    #define this,) this)
    #define Object::%0(%1) Object_%0(Object:this,%1)
#else
    #define Object::%0(%1) Object.%0(%1)
#endif