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/postgres/000027_create_status.up.sql

@@ -0,0 +1,15 @@
+CREATE TABLE IF NOT EXISTS status (
+    userid VARCHAR(26) PRIMARY KEY,
+    status VARCHAR(32),
+    manual boolean,
+    lastactivityat bigint
+);
+
+ALTER TABLE status DROP COLUMN IF EXISTS activechannel;
+
+CREATE INDEX IF NOT EXISTS idx_status_status ON status(status);
+
+ALTER TABLE status ADD COLUMN IF NOT EXISTS dndendtime bigint;
+ALTER TABLE status ADD COLUMN IF NOT EXISTS prevstatus VARCHAR(32);
+
+DROP INDEX IF EXISTS idx_status_user_id;