[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/git/required/2022_04_30_hp_regen_per_second.sql

@@ -1 +1 @@
-ALTER TABLE npc_types ADD COLUMN hp_regen_per_second bigint(11) DEFAULT 0 AFTER hp_regen_rate;
+ALTER TABLE npc_types ADD COLUMN hp_regen_per_second bigint(11) DEFAULT 0 AFTER hp_regen_rate;

utils/sql/git/required/2022_05_01_character_peqzone_flags.sql

@@ -0,0 +1,14 @@
+SET NAMES utf8mb4;
+SET FOREIGN_KEY_CHECKS = 0;
+
+-- ----------------------------
+-- Table structure for character_peqzone_flags
+-- ----------------------------
+DROP TABLE IF EXISTS `character_peqzone_flags`;
+CREATE TABLE `character_peqzone_flags`  (
+  `id` int NOT NULL DEFAULT 0,
+  `zone_id` int NOT NULL DEFAULT 0,
+  PRIMARY KEY (`id`, `zone_id`) USING BTREE
+) ENGINE = InnoDB CHARACTER SET = latin1 COLLATE = latin1_swedish_ci ROW_FORMAT = Compact;
+
+SET FOREIGN_KEY_CHECKS = 1;