Add minimal example configuration for DecapCMS

public/decapcms/config.yml

@@ -0,0 +1,34 @@
+backend:
+  name: git-gateway
+  branch: main
+
+media_folder: "src/assets/images"
+public_folder: "/_astro"
+
+collections:
+  - name: "post"
+    label: "Post"
+    folder: "src/content/post"
+    create: true
+    fields:
+      - { label: "Title", name: "title", widget: "string" }
+      - { label: "Excerpt", name: "excerpt", widget: "string" }
+      - { label: "Category", name: "category", widget: "string" }
+      - {
+          label: "Tags",
+          name: "tags",
+          widget: "list",
+          allow_add: true,
+          allow_delete: true,
+          collapsed: false,
+          field: { label: "Tag", name: "tag", widget: "string" },
+        }
+      - { label: "Image", name: "image", widget: "string" }
+      - {
+          label: "Publish Date",
+          name: "publishDate",
+          widget: "datetime",
+          required: false,
+        }
+      - { label: "Author", name: "author", widget: "string" }
+      - { label: "Content", name: "body", widget: "markdown" }