feat: add options object where you can specify a schema

feat: configure a schema for the tables

add docs

docs/pages/getting-started/adapters/kysely.mdx

@@ -254,6 +254,12 @@ export async function down(db: Kysely<any>): Promise<void> {
 
 For more information about creating and running migrations with Kysely, refer to the [Kysely migrations documentation](https://kysely.dev/docs/migrations).
 
+If you'd prefer organising your tables under a separate schema you can initialise the Kysely adapter as follows:
+
+```
+KyselyAdapter(db, { schemaName: "auth" })
+```
+
 ### Naming conventions
 
 If mixed snake_case and camelCase column names is an issue for you and/or your underlying database system, we recommend using Kysely's `CamelCasePlugin` ([see the documentation here](https://kysely-org.github.io/kysely-apidoc/classes/CamelCasePlugin.html)) feature to change the field names. This won't affect NextAuth.js, but will allow you to have consistent casing when using Kysely.

packages/adapter-kysely/src/index.ts

@@ -33,6 +33,10 @@ export interface Database {
   VerificationToken: VerificationToken
 }
 
+interface Options {
+  schemaName?: string
+}
+
 export const format = {
   from<T>(object?: Record<string, any>): T {
     const newObject: Record<string, unknown> = {}
@@ -51,14 +55,26 @@ export const format = {
   },
 }
 
-export function KyselyAdapter(db: Kysely<Database>): Adapter {
-  const { adapter } = db.getExecutor()
-  const { supportsReturning } = adapter
+export function KyselyAdapter(
+  kyselyDb: Kysely<Database>,
+  options?: Options
+): Adapter {
+  const { adapter } = kyselyDb.getExecutor()
   const isSqlite = adapter instanceof SqliteAdapter
+  if (options?.schemaName && isSqlite) {
+    console.warn(
+      'SQLite does not support schemas. Ignoring "schemaName" option.'
+    )
+  }
+  const { supportsReturning } = adapter
   /** If the database is SQLite, turn dates into an ISO string  */
   const to = isSqlite ? format.to : <T>(x: T) => x as T
   /** If the database is SQLite, turn ISO strings into dates */
   const from = isSqlite ? format.from : <T>(x: T) => x as T
+  const db =
+    options?.schemaName && !isSqlite
+      ? kyselyDb.withSchema(options.schemaName)
+      : kyselyDb
   return {
     async createUser(data) {
       const user = { ...data, id: crypto.randomUUID() }