[MM-42167] Add configuration tables to migration system (#19671)

* add configuration tables to migration system

* config: move config migrations into new system completely

* add mysql specific bits

* use helper db instance instead

* fix typo

Co-authored-by: Mattermod <mattermod@users.noreply.github.com>

config/migrations/postgres/000001_create_configurations.down.sql

@@ -0,0 +1 @@
+-- It is intentionally to not have a rollback for adding configurations table.

config/migrations/postgres/000001_create_configurations.up.sql

@@ -0,0 +1,8 @@
+CREATE TABLE IF NOT EXISTS configurations (
+    id varchar(26),
+    value text NOT NULL,
+    createat bigint NOT NULL,
+    active boolean DEFAULT NULL,
+    PRIMARY KEY (id),
+    UNIQUE (active)
+);

config/migrations/postgres/000002_create_configuration_files.down.sql

@@ -0,0 +1 @@
+-- It is intentionally to not have a rollback for adding configuration files table.

config/migrations/postgres/000002_create_configuration_files.up.sql

@@ -0,0 +1,7 @@
+CREATE TABLE IF NOT EXISTS configurationfiles (
+    name VARCHAR(64),
+    data text NOT NULL,
+    createat bigint NOT NULL,
+    updateat bigint NOT NULL,
+    PRIMARY KEY (name)
+);