[Commands] Add additional #peqzone functionality. (#2085)

* [Commands] Add additional #peqzone functionality.
- Add #peqzone flagging capabilities so operators don't have to blanket allow #peqzone access to zones.
- Allows you to set a zone's `peqzone` column to `2` and disallow use of `#peqzone` until they have been given the appropriate flag.
- Add #peqzone_flags command to list your #peqzone flags similar to #flags command.
- Add `character_peqzone_flags` table to database and database_schema.h.
- Required SQL update to add the new table.
- Add client:ClearPEQZoneFlag(zone_id) to Lua.
- Add client:HasPEQZoneFlag(zone_id) to Lua.
- Add client:LoadPEQZoneFlags() to Lua.
- Add client:LoadZoneFlags() to Lua.
- Add client:SendPEQZoneFlagInfo(client) to Lua.
- Add client:SetPEQZoneFlag(zone_id) to Lua.
- Add $client->ClearPEQZoneFlag(zone_id) to Perl.
- Add $client->HasPEQZoneFlag(zone_id) to Perl.
- Add $client->LoadPEQZoneFlags() to Perl.
- Add $client->SendPEQZoneFlagInfo(client) to Perl.
- Add $client->SetPEQZoneFlag(zone_id) to Perl.

* Fixes.

utils/sql/db_update_manifest.txt

@@ -433,6 +433,7 @@
 9177|2022_03_06_table_structure_changes.sql|SHOW COLUMNS FROM `pets` LIKE 'id'|empty|
 9178|2022_03_07_saylink_collation.sql|SELECT * FROM db_version WHERE version >= 9178|empty|
 9179|2022_04_30_hp_regen_per_second.sql|SHOW COLUMNS FROM `npc_types` LIKE 'hp_regen_per_second'|empty|
+9180|2022_05_01_character_peqzone_flags.sql|SHOW TABLES LIKE 'character_peqzone_flags'|empty|
 
 # Upgrade conditions:
 # 	This won't be needed after this system is implemented, but it is used database that are not