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/000027_create_status.up.sql

@@ -0,0 +1,83 @@
+CREATE TABLE IF NOT EXISTS Status (
+    UserId varchar(26) NOT NULL,
+    Status varchar(32) DEFAULT NULL,
+    Manual tinyint(1) DEFAULT NULL,
+    LastActivityAt bigint(20) DEFAULT NULL,
+    PRIMARY KEY (UserId)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
+
+SET @preparedStatement = (SELECT IF(
+    (
+        SELECT COUNT(*) FROM INFORMATION_SCHEMA.COLUMNS
+        WHERE table_name = 'Status'
+        AND table_schema = DATABASE()
+        AND column_name = 'ActiveChannel'
+    ) > 0,
+    'ALTER TABLE Status DROP COLUMN ActiveChannel;',
+    'SELECT 1'
+));
+
+PREPARE alterIfExists FROM @preparedStatement;
+EXECUTE alterIfExists;
+DEALLOCATE PREPARE alterIfExists;
+
+SET @preparedStatement = (SELECT IF(
+    (
+        SELECT COUNT(*) FROM INFORMATION_SCHEMA.STATISTICS
+        WHERE table_name = 'Status'
+        AND table_schema = DATABASE()
+        AND index_name = 'idx_status_status'
+    ) > 0,
+    'SELECT 1',
+    'CREATE INDEX idx_status_status ON Status(Status);'
+));
+
+PREPARE createIndexIfNotExists FROM @preparedStatement;
+EXECUTE createIndexIfNotExists;
+DEALLOCATE PREPARE createIndexIfNotExists;
+
+SET @preparedStatement = (SELECT IF(
+    (
+        SELECT COUNT(*) FROM INFORMATION_SCHEMA.COLUMNS
+        WHERE table_name = 'Status'
+        AND table_schema = DATABASE()
+        AND column_name = 'DNDEndTime'
+    ) > 0,
+    'SELECT 1',
+    'ALTER TABLE Status ADD COLUMN DNDEndTime BIGINT;'
+));
+
+PREPARE alterIfNotExists FROM @preparedStatement;
+EXECUTE alterIfNotExists;
+DEALLOCATE PREPARE alterIfNotExists;
+
+
+SET @preparedStatement = (SELECT IF(
+    (
+        SELECT COUNT(*) FROM INFORMATION_SCHEMA.COLUMNS
+        WHERE table_name = 'Status'
+        AND table_schema = DATABASE()
+        AND column_name = 'PrevStatus'
+    ) > 0,
+    'SELECT 1',
+    'ALTER TABLE Status ADD COLUMN PrevStatus VARCHAR(32);'
+));
+
+PREPARE alterIfNotExists FROM @preparedStatement;
+EXECUTE alterIfNotExists;
+DEALLOCATE PREPARE alterIfNotExists;
+
+SET @preparedStatement = (SELECT IF(
+    (
+        SELECT COUNT(*) FROM INFORMATION_SCHEMA.STATISTICS
+        WHERE table_name = 'Status'
+        AND table_schema = DATABASE()
+        AND index_name = 'idx_status_user_id'
+    ) > 0,
+    'DROP INDEX idx_status_user_id ON Status;',
+    'SELECT 1'
+));
+
+PREPARE removeIndexIfExists FROM @preparedStatement;
+EXECUTE removeIndexIfExists;
+DEALLOCATE PREPARE removeIndexIfExists;