[Bots] Cleanup and remove preprocessors. (#2757)

* [Bots] Cleanup and remove preprocessors.

- Removes every `#ifdef BOTS` we have and locks bots behind `Bots:AllowBots` rule.
- Bot updates are now done by default similar to regular database updates.
- Modify `CMakeLists.txt`, `.drone.yml`, and `BUILD.md` to match the removal of `EQEMU_ENABLE_BOTS`.

* Cleanup

- Add SQL for enabling bots for servers with bots.
- Add message that tells players/operators bots are disabled.

* Suggested changes.

* Bot injection stuff

* Change SQL to bot SQL.

* Tweaks

* Remove `is_bot`

* Update version.h

* Update main.cpp

* Update database.cpp

* Fix name availability crash

* Remove bots from update script

Co-authored-by: Akkadius <akkadius1@gmail.com>

zone/aa.cpp

@@ -36,9 +36,7 @@ Copyright (C) 2001-2016 EQEMu Development Team (http://eqemulator.net)
 #include "zonedb.h"
 #include "../common/zone_store.h"
 
-#ifdef BOTS
 #include "bot.h"
-#endif
 
 extern QueryServ* QServ;
 
@@ -1596,13 +1594,11 @@ bool Mob::CanUseAlternateAdvancementRank(AA::Rank *rank) {
 			return false;
 		}
 	}
-#ifdef BOTS
 	else if (IsBot()) {
 		if (rank->expansion && !(CastToBot()->GetExpansionBitmask() & (1 << (rank->expansion - 1)))) {
 			return false;
 		}
 	}
-#endif
 	else {
 		if (rank->expansion && !(RuleI(World, ExpansionSettings) & (1 << (rank->expansion - 1)))) {
 			return false;