refactor: move Drupal into a subdirectory

.gitignore

@@ -0,0 +1,31 @@
+/.editorconfig
+/.gitattributes
+/vendor/
+/web/.csslintrc
+/web/.eslintignore
+/web/.eslintrc.json
+/web/.ht.router.php
+/web/.htaccess
+/web/INSTALL.txt
+/web/README.md
+/web/autoload.php
+/web/core/
+/web/example.gitignore
+/web/index.php
+/web/modules/README.txt
+/web/profiles/README.txt
+/web/robots.txt
+/web/sites/*/files/
+/web/sites/*/private/
+/web/sites/*/services*.yml
+/web/sites/*/settings*.php
+/web/sites/README.txt
+/web/sites/default/default.services.yml
+/web/sites/default/default.settings.php
+/web/sites/development.services.yml
+/web/sites/example.settings.local.php
+/web/sites/example.sites.php
+/web/sites/simpletest/
+/web/themes/README.txt
+/web/update.php
+/web/web.config