[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/bot_command.h

@@ -20,8 +20,6 @@
 #ifndef BOT_COMMAND_H
 #define BOT_COMMAND_H
 
-#ifdef BOTS
-
 class Client;
 class Seperator;
 
@@ -691,5 +689,3 @@ void helper_send_usage_required_bots(Client *bot_owner, BCEnum::SpType spell_typ
 bool helper_spell_check_fail(STBaseEntry* local_entry);
 bool helper_spell_list_fail(Client *bot_owner, bcst_list* spell_list, BCEnum::SpType spell_type);
 #endif
-
-#endif // BOTS