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/000099_create_drafts.up.sql

@@ -0,0 +1,12 @@
+CREATE TABLE IF NOT EXISTS drafts (
+    createat bigint,
+    updateat bigint,
+    deleteat bigint,
+    userid VARCHAR(26),
+    channelid VARCHAR(26),
+    rootid VARCHAR(26) DEFAULT '',
+    message VARCHAR(65535),
+    props VARCHAR(8000),
+    fileids VARCHAR(300),
+    PRIMARY KEY (userid, channelid, rootid)
+);