added prismAdapter for lucia

prisma/schema.prisma

@@ -28,4 +28,12 @@ model Post {
   published Boolean @default(false)
   author    User    @relation(fields: [authorId], references: [id])
   authorId  Int
-}
+}
+
+model Session {
+  id        String   @id
+  userId    String
+  expiresAt DateTime
+
+  user      User     @relation(references: [id], fields: [userId], onDelete: Cascade)
+}