chore: check schemas

Signed-off-by: Henry Schreiner <henryschreineriii@gmail.com>

.pre-commit-config.yaml

@@ -79,3 +79,20 @@ repos:
   - id: codespell
     args: ["-L", "sur", "-w"]
     exclude: ^docs/working-examples\.md$  # Autogenerated
+
+
+- repo: https://github.com/python-jsonschema/check-jsonschema
+  rev: 0.27.0
+  hooks:
+    - id: check-dependabot
+    - id: check-github-actions
+    - id: check-github-workflows
+    - id: check-gitlab-ci
+    - id: check-readthedocs
+    - id: check-travis
+    - id: check-jsonschema
+      name: Check projects
+      args: [--schemafile, docs/data/projects.schema.json]
+      files: '^docs/data/projects.yml$'
+    - id: check-metaschema
+      files: '^docs/data/projects.schema.json$'