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/000034_create_oauthauthdata.up.sql

@@ -0,0 +1,38 @@
+CREATE TABLE IF NOT EXISTS OAuthAuthData (
+  ClientId varchar(26) DEFAULT NULL,
+  UserId varchar(26) DEFAULT NULL,
+  Code varchar(128) NOT NULL,
+  ExpiresIn int(11) DEFAULT NULL,
+  CreateAt bigint(20) DEFAULT NULL,
+  RedirectUri text,
+  State text,
+  Scope varchar(128) DEFAULT NULL,
+  PRIMARY KEY (Code)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
+
+SET @preparedStatement = (SELECT IF(
+    (
+        SELECT COUNT(*) FROM INFORMATION_SCHEMA.COLUMNS
+        WHERE table_name = 'OAuthAuthData'
+        AND table_schema = DATABASE()
+        AND column_name = 'State'
+        AND (data_type != 'varchar' OR character_maximum_length != 1024)
+    ) > 0,
+    'ALTER TABLE OAuthAuthData MODIFY State text;',
+    'SELECT 1'
+));
+
+SET @preparedStatement = (SELECT IF(
+    (
+        SELECT COUNT(*) FROM INFORMATION_SCHEMA.STATISTICS
+        WHERE table_name = 'OAuthAuthData'
+        AND table_schema = DATABASE()
+        AND index_name = 'idx_oauthauthdata_client_id'
+    ) > 0,
+    'DROP INDEX idx_oauthauthdata_client_id ON OAuthAuthData;',
+    'SELECT 1'
+));
+
+PREPARE removeIndexIfExists FROM @preparedStatement;
+EXECUTE removeIndexIfExists;
+DEALLOCATE PREPARE removeIndexIfExists;