Add posts.json feed

source/posts.json.twig

@@ -0,0 +1,20 @@
+---
+permalink: posts.json
+use: [posts]
+---
+
+{
+    "posts": [
+        {% for post in data.posts|reverse %}
+            {
+                "id": "{{ loop.index }}",
+                "title": {{ post.title|json_encode|raw }},
+                "created": "{{ post.date }}",
+                "updated": "{{ post.date }}",
+                "path": "{{ post.url|trim('/', 'right') }}",
+                "content": {{ post.blocks.content|json_encode|raw }},
+                "status": "{{ post.draft ? '0' : '1' }}"
+            }{% if not loop.last %},{% endif %}
+        {% endfor %}
+    ]
+}