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/000019_create_licenses.up.sql

@@ -0,0 +1,6 @@
+CREATE TABLE IF NOT EXISTS licenses (
+    id VARCHAR(26) NOT NULL,
+    createat bigint,
+    bytes VARCHAR(10000),
+    PRIMARY KEY (id)
+);