Added OpenAPI docs using nelmioAPIDocBundle.

config/bundles.php

@@ -11,4 +11,5 @@ return [
     EasyCorp\Bundle\EasyAdminBundle\EasyAdminBundle::class => ['all' => true],
     Nelmio\CorsBundle\NelmioCorsBundle::class => ['all' => true],
     Twig\Extra\TwigExtraBundle\TwigExtraBundle::class => ['all' => true],
+    Nelmio\ApiDocBundle\NelmioApiDocBundle::class => ['all' => true],
 ];

config/packages/nelmio_api_doc.yaml

@@ -0,0 +1,9 @@
+nelmio_api_doc:
+    documentation:
+        info:
+            title: SomniaRooms
+            description: A FOSS Hotel room booking system.
+            version: 1.0.0
+    areas: # to filter documented areas
+        path_patterns:
+            - ^/api(?!/doc$) # Accepts routes under /api except /api/doc

config/routes/nelmio_api_doc.yaml

@@ -0,0 +1,10 @@
+# Expose your documentation as JSON swagger compliant
+app.swagger:
+    path: /api/doc.json
+    methods: GET
+    defaults: { _controller: nelmio_api_doc.controller.swagger }
+
+app.swagger_ui:
+   path: /api/swagger
+   methods: GET
+   defaults: { _controller: nelmio_api_doc.controller.swagger_ui }