schema: some schema editor fixes

actions/Schemas/find.ts

@@ -0,0 +1,20 @@
+"use server";
+
+import { prisma } from "@/prisma/prismaClient";
+
+export const findSchema = async (id: string) => {
+  const schema = await prisma.schema.findFirst({
+    where: {
+      id,
+    },
+    include: {
+      gameSystem: {
+        select: {
+          id: true,
+          name: true,
+        },
+      },
+    },
+  });
+  return schema;
+};