Mono repo -> Master (#22553)

Combines the following repositories into one:

https://github.com/mattermost/mattermost-server
https://github.com/mattermost/mattermost-webapp
https://github.com/mattermost/focalboard
https://github.com/mattermost/mattermost-plugin-playbooks

server/channels/db/migrations/mysql/000012_create_commands.up.sql

@@ -0,0 +1,65 @@
+CREATE TABLE IF NOT EXISTS Commands (
+    Id varchar(26) NOT NULL,
+    Token varchar(26) DEFAULT NULL,
+    CreateAt bigint(20) DEFAULT NULL,
+    UpdateAt bigint(20) DEFAULT NULL,
+    DeleteAt bigint(20) DEFAULT NULL,
+    CreatorId varchar(26) DEFAULT NULL,
+    TeamId varchar(26) DEFAULT NULL,
+    `Trigger` varchar(128) DEFAULT NULL,
+    Method varchar(1) DEFAULT NULL,
+    Username varchar(64) DEFAULT NULL,
+    IconURL text,
+    AutoComplete tinyint(1) DEFAULT NULL,
+    AutoCompleteDesc text,
+    AutoCompleteHint text,
+    DisplayName varchar(64) DEFAULT NULL,
+    Description varchar(128) DEFAULT NULL,
+    URL text,
+    PRIMARY KEY (Id),
+    KEY idx_command_team_id (TeamId),
+    KEY idx_command_update_at (UpdateAt),
+    KEY idx_command_create_at (CreateAt),
+    KEY idx_command_delete_at (DeleteAt)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
+
+SET @preparedStatement = (SELECT IF(
+    (
+        SELECT COUNT(*) FROM INFORMATION_SCHEMA.COLUMNS
+        WHERE table_name = 'Commands'
+        AND table_schema = DATABASE()
+        AND column_name = 'PluginId'
+    ) > 0,
+    'SELECT 1',
+    'ALTER TABLE Commands ADD PluginId varchar(190);'
+));
+
+PREPARE alterIfNotExists FROM @preparedStatement;
+EXECUTE alterIfNotExists;
+DEALLOCATE PREPARE alterIfNotExists;
+
+CREATE PROCEDURE Migrate_If_Version_Below_5280 ()
+BEGIN
+DECLARE
+	CURRENT_DB_VERSION TEXT;
+DECLARE
+    SYSTEMS_TABLE_EXISTS INT;
+    SELECT COUNT(*)
+        FROM INFORMATION_SCHEMA.COLUMNS
+    WHERE
+        TABLE_NAME = 'Systems'
+    AND table_schema = DATABASE() INTO SYSTEMS_TABLE_EXISTS;
+    IF (SYSTEMS_TABLE_EXISTS > 0) THEN
+	    SELECT
+		    Value
+	    FROM
+		    Systems
+	    WHERE
+		    Name = 'Version' INTO CURRENT_DB_VERSION;
+	    IF(INET_ATON(CURRENT_DB_VERSION) < INET_ATON('5.28.0')) THEN
+		    UPDATE Commands SET PluginId = '' WHERE PluginId IS NULL;
+	    END IF;
+    END IF;
+END;
+	CALL Migrate_If_Version_Below_5280 ();
+	DROP PROCEDURE IF EXISTS Migrate_If_Version_Below_5280;