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/000012_create_commands.up.sql

@@ -0,0 +1,28 @@
+CREATE TABLE IF NOT EXISTS commands (
+    id VARCHAR(26) PRIMARY KEY,
+    token VARCHAR(26),
+    createat bigint,
+    updateat bigint,
+    deleteat bigint,
+    creatorid VARCHAR(26),
+    teamid VARCHAR(26),
+    trigger VARCHAR(128),
+    method VARCHAR(1),
+    username VARCHAR(64),
+    iconurl VARCHAR(1024),
+    autocomplete bool,
+    autocompletedesc VARCHAR(1024),
+    autocompletehint VARCHAR(1024),
+    displayname VARCHAR(64),
+    description VARCHAR(128),
+    url VARCHAR(1024)
+);
+
+CREATE INDEX IF NOT EXISTS idx_command_team_id ON commands (teamid);
+CREATE INDEX IF NOT EXISTS idx_command_update_at ON commands (updateat);
+CREATE INDEX IF NOT EXISTS idx_command_create_at ON commands (createat);
+CREATE INDEX IF NOT EXISTS idx_command_delete_at ON commands (deleteat);
+
+ALTER TABLE commands ADD COLUMN IF NOT EXISTS pluginid VARCHAR(190);
+
+UPDATE commands SET pluginid = '' WHERE pluginid IS NULL;