feat: add instance config endpoint

src/Entity/Instance.php

@@ -0,0 +1,48 @@
+<?php
+
+namespace App\Entity;
+
+use ApiPlatform\Metadata\ApiResource;
+use ApiPlatform\Metadata\Get;
+use App\Controller\InstanceController;
+
+#[ApiResource(
+    operations: [
+        new Get(
+            uriTemplate: '/config',
+            controller: InstanceController::class,
+            shortName: 'Configuration',
+            read: false,
+        ),
+    ]
+)]
+class Instance
+{
+    private ?bool $oauthEnabled = null;
+
+    private ?bool $limitedFeatures = null;
+
+    public function isSsoLogin(): ?bool
+    {
+        return $this->oauthEnabled;
+    }
+
+    public function setOauthEnabled(bool $oauthEnabled): static
+    {
+        $this->oauthEnabled = $oauthEnabled;
+
+        return $this;
+    }
+
+    public function isLimitedFeatures(): ?bool
+    {
+        return $this->limitedFeatures;
+    }
+
+    public function setLimitedFeatures(bool $limitedFeatures): static
+    {
+        $this->limitedFeatures = $limitedFeatures;
+
+        return $this;
+    }
+}