feat: create author_search table

src/db/migrations/032_add_author_search.ts

@@ -0,0 +1,18 @@
+import { Kysely, sql } from 'kysely';
+
+export async function up(db: Kysely<any>): Promise<void> {
+  await db.schema
+    .createTable('author_search')
+    .addColumn('pubkey', 'char(64)', (col) => col.primaryKey())
+    .addColumn('search', 'text', (col) => col.notNull())
+    .ifNotExists()
+    .execute();
+
+  await sql`CREATE EXTENSION IF NOT EXISTS pg_trgm;`.execute(db);
+  await sql`CREATE INDEX author_search_search_idx ON author_search USING GIN (search gin_trgm_ops);`.execute(db);
+}
+
+export async function down(db: Kysely<any>): Promise<void> {
+  await db.schema.dropIndex('author_search_search_idx').ifExists().execute();
+  await db.schema.dropTable('author_search').execute();
+}