started migration process

- installed and enabled dependencies
- created materio_migrate module
- drafted thesaurus, tags, showroom, company, materiau migrations
- exported config files

composer.json

@@ -5,7 +5,11 @@
     "license": "GPL-2.0-or-later",
     "require": {
         "composer/installers": "^1.0.24",
-        "wikimedia/composer-merge-plugin": "^1.4"
+        "wikimedia/composer-merge-plugin": "^1.4",
+        "drupal/migrate_plus": "^4.0",
+        "drupal/migrate_tools": "^4.0",
+        "drupal/config_devel": "^1.2",
+        "drupal/examples": "1.x-dev"
     },
     "replace": {
         "drupal/core": "^8.6"