feat(Core/Commands): GM command to display strings (#6268)

- Implements a new GM command to display strings from the acore_string table
- Syntax: .string #id [#locale]
- Closes https://github.com/azerothcore/azerothcore-wotlk/issues/1052

data/sql/updates/pending_db_world/rev_1623112710636791400.sql

@@ -0,0 +1,7 @@
+INSERT INTO `version_db_world` (`sql_rev`) VALUES ('1623112710636791400');
+
+DELETE FROM `acore_string` WHERE `entry` = 6617;
+INSERT INTO `acore_string` VALUES (6617, 'No acore_string for id: %i found.', null, null, 'Es wurde kein acore_string mit der id: %i gefunden.', null, null, null, null, null);
+
+DELETE FROM `command` WHERE `name` = 'string';
+INSERT INTO `command` VALUES ('string', 2, 'Syntax: .string #id [#locale]');

src/server/game/Miscellaneous/Language.h

@@ -1195,6 +1195,9 @@ enum AcoreStrings
 
     LANG_GM_SILENCE                      = 6616,              // "Silence is ON for %s" - Spell 1852
 
+    // Used for .string command
+    LANG_NO_ACORE_STRING_FOUND           = 6617,
+
     LANG_WORLD_CLOSED                    = 7523,
     LANG_WORLD_OPENED                    = 7524,
 

src/server/scripts/Commands/cs_misc.cpp

@@ -113,7 +113,8 @@ public:
             { "unbindsight",        SEC_ADMINISTRATOR,      false, HandleUnbindSightCommand,            "" },
             { "playall",            SEC_GAMEMASTER,         false, HandlePlayAllCommand,                "" },
             { "skirmish",           SEC_ADMINISTRATOR,      false, HandleSkirmishCommand,               "" },
-            { "mailbox",            SEC_MODERATOR,          false, &HandleMailBoxCommand,               "" }
+            { "mailbox",            SEC_MODERATOR,          false, &HandleMailBoxCommand,               "" },
+            { "string",             SEC_GAMEMASTER,         false, &HandleStringCommand,                "" }
         };
         return commandTable;
     }
@@ -3344,6 +3345,42 @@ public:
         handler->GetSession()->SendShowMailBox(player->GetGUID());
         return true;
     }
+
+    static bool HandleStringCommand(ChatHandler *handler, char const *args)
+    {
+        if (!*args)
+        {
+            handler->SendSysMessage(LANG_CMD_SYNTAX);
+            return false;
+        }
+
+        uint32 id = atoi(strtok((char*)args, " "));
+        if (id == 0)
+        {
+            handler->SendSysMessage(LANG_CMD_SYNTAX);
+            return false;
+        }
+
+        uint32 locale = 0;
+        char* localeString = strtok(nullptr, " ");
+        if (localeString != nullptr)
+        {
+            locale = atoi(localeString);
+        }
+
+        const char* str = sObjectMgr->GetAcoreString(id, static_cast<LocaleConstant>(locale));
+
+        if (strcmp(str, "<error>") == 0)
+        {
+            handler->PSendSysMessage(LANG_NO_ACORE_STRING_FOUND, id);
+            return true;
+        }
+        else
+        {
+            handler->SendSysMessage(str);
+            return true;
+        }
+    }
 };
 
 void AddSC_misc_commandscript()