feat: kysely migrations (#17198)

server/src/schema/tables/system-metadata.table.ts

@@ -0,0 +1,12 @@
+import { SystemMetadataKey } from 'src/enum';
+import { Column, PrimaryColumn, Table } from 'src/sql-tools';
+import { SystemMetadata } from 'src/types';
+
+@Table('system_metadata')
+export class SystemMetadataTable<T extends keyof SystemMetadata = SystemMetadataKey> {
+  @PrimaryColumn({ type: 'character varying' })
+  key!: T;
+
+  @Column({ type: 'jsonb' })
+  value!: SystemMetadata[T];
+}