feat(ListItem): Add ListItem schema

.vscode/settings.json

@@ -14,6 +14,7 @@
     "./built/Heading.schema.json": "*.heading.yaml",
     "./built/ImageObject.schema.json": "*.imageObject.yaml",
     "./built/Include.schema.json": "*.include.yaml",
+    "./built/List.schema.json": "*.list.yaml",
     "./built/MediaObject.schema.json": "*mediaObject.yaml",
     "./built/Mount.schema.json": "*.mount.yaml",
     "./built/Organization.schema.json": "*.organization.yaml",

examples/list/nested.list.yaml

@@ -0,0 +1,12 @@
+type: List
+items:
+  - Item One
+  - type: ListItem
+    content:
+      - Item Two, containing nested children
+      - type: List
+        content:
+          - Nested Item One
+          - Nested Item Two
+          - Nested Item Three
+  - Item Three

examples/list/simple.list.yaml

@@ -0,0 +1,5 @@
+type: List
+items:
+  - Item One
+  - Item Two
+  - Item Three

schema/text/ListItem.schema.yaml

@@ -0,0 +1,15 @@
+title: ListItem
+'@id': schema:ListItem
+$extends: ../Thing.schema.yaml
+role: secondary
+status: unstable
+description: A single item in a list.
+properties:
+  content:
+    type: array
+    items:
+      $ref: InlineContent.schema.yaml
+  checked:
+    type: boolean
+required:
+  - content