fix: move imports to local __init__.py files to make less noise on the routers

app/schemas/grade_1/__init__.py

@@ -0,0 +1,27 @@
+from app.schemas.grade_1.compose_and_decompose_numbers import (
+    ComposeAndDecomposeNumbersProblem,
+    ComposeAndDecomposeNumbersRequest,
+)
+from app.schemas.grade_1.join_pictures_with_quantity import (
+    JoinPicturesWithQuantityProblem,
+    JoinPicturesWithQuantityRequest,
+)
+from app.schemas.grade_1.sum_with_image_reference import (
+    SumWithImageReferenceProblem,
+    SumWithImageReferenceRequest,
+)
+from app.schemas.grade_1.where_are_more_items import (
+    WhereAreMoreItemsProblem,
+    WhereAreMoreItemsRequest,
+)
+
+__all__ = [
+    "ComposeAndDecomposeNumbersProblem",
+    "ComposeAndDecomposeNumbersRequest",
+    "JoinPicturesWithQuantityProblem",
+    "JoinPicturesWithQuantityRequest",
+    "SumWithImageReferenceProblem",
+    "SumWithImageReferenceRequest",
+    "WhereAreMoreItemsProblem",
+    "WhereAreMoreItemsRequest",
+]