Issue #3150974 by andrewmacpherson: Add a basic composer.json to migrate_devel

composer.json

+{
+    "name": "migrate_devel",
+    "type": "drupal-module",
+    "description": "Migrate Development Tools",
+    "homepage": "https://www.drupal.org/project/migrate_devel",
+    "support": {
+        "issues": "https://www.drupal.org/project/issues/migrate_devel"
+    }
+}