feat(db-sqlite): add WAL mode support (#15278)

Adds support for [WAL](https://sqlite.org/wal.html) mode.
Fixes https://github.com/payloadcms/payload/issues/9290

```ts title="Example SQLite Adapter with WAL"
import { sqliteAdapter } from '@payloadcms/db-sqlite'
export default buildConfig({
  // Your config goes here
  collections: [
    // Collections go here
  ],
  // Configure the SQLite adapter here
  db: sqliteAdapter({
    wal: true, // Enable WAL mode with default settings,
    wal: { synchronous: 'NORMAL' }, // with configurable settings
    client: {
      url: process.env.DATABASE_URL,
    },
  }),
})
```

Settings for the `wal` option:
| Setting | Description | Default |
| ------------------ |
-------------------------------------------------------------------------------------------------
| ----------------- |
| `journalSizeLimit` | Max size of the WAL file before checkpointing to
the main DB. | `67108864` (64MB) |
| `synchronous` | WAL sync mode: `EXTRA`, `FULL`, `NORMAL`, `OFF`.
Controls balance of performance vs. data safety. | `'FULL'` |