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/000104_upgrade_notifyadmin.up.sql

@@ -0,0 +1,29 @@
+SET @preparedStatement = (SELECT IF(
+    (
+        SELECT COUNT(*) FROM INFORMATION_SCHEMA.COLUMNS
+        WHERE table_name = 'NotifyAdmin'
+        AND table_schema = DATABASE()
+        AND column_name = 'RequiredFeature'
+        AND column_type != 'varchar(255)'
+    ) > 0,
+    'ALTER TABLE NotifyAdmin MODIFY COLUMN RequiredFeature varchar(255);',
+    'SELECT 1'
+));
+PREPARE alterIfExists FROM @preparedStatement;
+EXECUTE alterIfExists;
+DEALLOCATE PREPARE alterIfExists;
+
+SET @preparedStatement = (SELECT IF(
+    (
+    	SELECT COUNT(*) FROM INFORMATION_SCHEMA.COLUMNS
+        WHERE table_name = 'NotifyAdmin'
+        AND table_schema = DATABASE()
+        AND column_name = 'RequiredPlan'
+        AND column_type != 'varchar(100)'
+    ) > 0,
+    'ALTER TABLE NotifyAdmin MODIFY COLUMN RequiredPlan varchar(100);',
+    'SELECT 1'
+));
+PREPARE alterIfExists FROM @preparedStatement;
+EXECUTE alterIfExists;
+DEALLOCATE PREPARE alterIfExists;