models, graph2: Added Comment type and queries, and hooked it up to chapter.

graph2/queries/comment.go

@@ -0,0 +1,15 @@
+package queries
+
+import (
+	"context"
+
+	"git.aiterp.net/rpdata/api/models/comments"
+
+	"git.aiterp.net/rpdata/api/models"
+)
+
+// Queries
+
+func (r *resolver) Comment(ctx context.Context, id string) (models.Comment, error) {
+	return comments.Find(id)
+}