[projects] Add project: typst-community/json-schemas (#459)

Co-authored-by: YDX-2147483647 <73375426+YDX-2147483647@users.noreply.github.com>

Author: github-actions[bot]

projects.yaml

@@ -2058,3 +2058,7 @@ projects:
     github_id: y-sunflower/tynding
     category: coding
     labels: [api]
+
+  - name: typst-community/json-schemas
+    github_id: typst-community/json-schemas
+    category: pkg