add first structure

tests/test_schema.py

@@ -0,0 +1,15 @@
+import importlib.metadata
+
+
+def test_schema_entrypoint() -> None:
+  (dbyaml_ep,) = importlib.metadata.entry_points(
+    group="validate_pyproject.file_schema", name="dbyaml"
+  )
+
+  dbyaml_fn = dbyaml_ep.load()
+  schema = dbyaml_fn()
+  assert schema == dbyaml_fn("dbyaml")
+  print(schema["properties"])
+  assert schema["type"] == "object"
+  assert schema["properties"]["verbose"]["type"] == "boolean"
+  assert schema["properties"]["list"]["type"] == "object"