fix: add value indices on nft_custody views (#1207)

Author: rafaelcr

src/migrations/1655235863682_nft_custody_value_index.ts

@@ -0,0 +1,9 @@
+/* eslint-disable @typescript-eslint/naming-convention */
+import { MigrationBuilder, ColumnDefinitions } from 'node-pg-migrate';
+
+export const shorthands: ColumnDefinitions | undefined = undefined;
+
+export async function up(pgm: MigrationBuilder): Promise<void> {
+  pgm.createIndex('nft_custody', 'value', { method: 'hash' });
+  pgm.createIndex('nft_custody_unanchored', 'value', { method: 'hash' });
+}