[DOCTRINE][SCHEMADEF] Create a new metadata driver to allow us to continue using static schemaDef functions

This has the benefit of requiring fewer code changes, as well as providing a better isolation
between GNU social and symfony, useful in case the framework needs to be changed

src/DependencyInjection/Compiler/SchemaDefCompilerPass.php

@@ -0,0 +1,23 @@
+<?php
+
+namespace App\DependencyInjection\Compiler;
+
+use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+use Symfony\Component\DependencyInjection\Reference;
+
+/**
+ * Register a new ORM driver to allow use to use the old schemaDef format
+ */
+class SchemaDefCompilerPass implements CompilerPassInterface
+{
+    public function process(ContainerBuilder $container)
+    {
+        $container->findDefinition('doctrine.orm.default_metadata_driver')
+                  ->addMethodCall('addDriver',
+                                  [new Reference('app.util.schemadef_driver'), 'App\\Entity']
+                  );
+
+        $container->setParameter('doctrine.orm.metadata.schemadef.class', App\Util\SchemaDefDriver::class);
+    }
+}