[Zones] Add Max Level Check to Zones. (#2714)

* [Zones] Add Max Level Check to Zones.

# Perl
- Add `$client->CanEnterZone(zone_short_name)`.
- Add `$client->CanEnterZone(zone_short_name, instance_version)`.

# Lua
- Add `client:CanEnterZone(zone_short_name)`.
- Add `client:CanEnterZone(zone_short_name, instance_version)`.

# Notes
- Allows operators to limit zones to a maximum level.
- Allows operators to see if a player can enter a zone before sending them.
- Keeps players from entering via `#peqzone` and `#zone` as well if they do not meet the requirements or are not high enough status to bypass the requirements.

* Cleanup.

utils/sql/db_update_manifest.txt

@@ -468,6 +468,7 @@
 9212|2022_10_14_fix_misty_pok_stone.sql|select * from doors where id = 2040 and `name` = 'POKRVPORT500' and dest_zone = 'misty'|empty|
 9213|2022_12_24_npc_keeps_sold_items.sql|SHOW COLUMNS FROM `npc_types` LIKE 'keeps_sold_items'|empty|
 9214|2022_12_24_character_exp_toggle.sql|SHOW COLUMNS FROM `character_data` LIKE 'exp_enabled'|empty|
+9215|2023_01_08_zone_max_level.sql|SHOW COLUMNS FROM `zone` LIKE 'max_level'|empty|
 
 # Upgrade conditions:
 # 	This won't be needed after this system is implemented, but it is used database that are not

utils/sql/git/required/2023_01_08_zone_max_level.sql

@@ -0,0 +1,2 @@
+ALTER TABLE `zone` 
+ADD COLUMN `max_level` tinyint(3) UNSIGNED NOT NULL DEFAULT 255 AFTER `min_level`;