[Bots] Fix creation limit, spawn limit, level requirement checks (#4868)

* [Bots] Fix creation limit, spawn limit, level requirement checks

- Previously if buckets were being used to control any of these values and the appropriate rule was set to 0, unset class specific buckets would override the main limit buckets.
- For example, if `Bots:SpawnLimit` is set to `0` and a player has their `bot_spawn_limit` set to `5` but they don't have a class bucket set for the class they're attempting to spawn a Cleric, the unset `bot_spawn_limit_Cleric` would return 0 and prevent Clerics from being spawned.
- This affected spawn limits, creation limits and level requirements to use bots if controlled by buckets.
- `#gm on` is required to be on for those beyond the ruled min status requirements to bypass the limits.

Rewrote checks and tested every scenario of set unset rules/buckets.

* Cleanup, fix bot count

- Fixes QueryBotCount to not account for soft deleted bots (`-deleted-`)

zone/bot.h

@@ -1105,6 +1105,9 @@ public:
 
 	// Public "Refactor" Methods
 	static bool CheckCampSpawnConditions(Client* c);
+	static bool CheckHighEnoughLevelForBots(Client* c, uint8 bot_class = Class::None);
+	static bool CheckCreateLimit(Client* c, uint32 bot_count, uint8 bot_class = Class::None);
+	static bool CheckSpawnLimit(Client* c, uint8 bot_class = Class::None);
 
 protected:
 	void BotMeditate(bool is_sitting);