Move the opdavies theme, add symlink

As per https://github.com/drupal-tome/tome-project.

> When composer install or update is ran, the "modules" and "themes"
directories, as well as the "settings.php" file, is symlinked into the
"web" directory.

.gitignore

@@ -1,16 +1,6 @@
-html/
-vendor/
-
-!content/
-
-web/*
-!web/assets/
-web/assets/*
-!web/assets/images/
-!web/themes/
-web/themes/*
-!web/themes/custom/
-web/themes/custom/*
-!web/themes/custom/opdavies/
-
-recipes/*/content
+/.editorconfig
+/.gitattributes
+/drush
+/html
+/vendor/
+/web

composer.json

@@ -106,6 +106,13 @@
         "export": "drush tome:export --yes",
         "import": "drush tome:import",
         "generate": "drush tome:static --uri https://www.oliverdavies.uk",
+        "post-install-cmd": [
+            "@symlink"
+        ],
+        "post-update-cmd": [
+            "@symlink"
+        ],
+        "symlink": "./tools/scripts/symlink.sh",
         "test": [
             "composer validate --strict"
         ]

tools/scripts/symlink.sh

@@ -0,0 +1,19 @@
+#!/usr/bin/env bash
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+if [ ! -L web/sites/default/settings.php ] && [ ! -e web/sites/default/settings.php ]; then
+    ln -s ../../../settings.php web/sites/default/settings.php
+fi
+
+mkdir -p web/{modules,themes}
+
+if [ ! -L web/themes/custom ] && [ ! -e web/themes/custom ]; then
+    ln -s ../../themes web/themes/custom
+fi
+
+if [ ! -L web/modules/custom ] && [ ! -e web/modules/custom ]; then
+    ln -s ../../modules web/modules/custom
+fi