feat(Core/Opcodes): Implement CMSG_COMPLAIN & CMSG_CALENDAR_COMPLAIN (#25329)

Co-authored-by: Dmitri Petmanson <53072+laizerox@users.noreply.github.com>
Co-authored-by: Benjamin Jackson <38561765+heyitsbench@users.noreply.github.com>

data/sql/updates/pending_db_characters/rev_1774971400849620100.sql

@@ -0,0 +1,18 @@
+--
+CREATE TABLE `spam_reports` (
+    `ID` INT UNSIGNED NOT NULL AUTO_INCREMENT,
+    `SpamType` TINYINT UNSIGNED NOT NULL COMMENT '0 = mail, 1 = chat, 2 = calendar',
+    `SpammerGuid` INT UNSIGNED NOT NULL DEFAULT '0',
+    `Unk1` INT UNSIGNED NULL DEFAULT '0',
+    `MailIdOrMessageType` INT UNSIGNED NULL DEFAULT '0',
+    `ChannelId` INT UNSIGNED NULL COMMENT 'Only used if SpamType = 1',
+    `SecondsSinceMessage` INT UNSIGNED NULL COMMENT 'Only used if SpamType = 1',
+    `Description` LONGTEXT NULL DEFAULT NULL COLLATE 'utf8mb4_unicode_ci',
+    `Time` INT NULL DEFAULT NULL COMMENT 'Time of report',
+    PRIMARY KEY (`ID`) USING BTREE
+)
+CHARSET = utf8mb4
+COLLATE = utf8mb4_unicode_ci
+ENGINE = InnoDB
+ROW_FORMAT = DEFAULT
+;