added sql file

database/bfgd/scripts/0012.sql

@@ -0,0 +1,19 @@
+
+-- Copyright (c) 2025 Hemi Labs, Inc.
+-- Use of this source code is governed by the MIT License,
+-- which can be found in the LICENSE file.
+
+BEGIN;
+
+UPDATE version SET version = 12;
+
+CREATE TABLE l2_keystones_lowest_btc_block (
+    l2_keystone_abrev_hash BYTEA NOT NULL PRIMARY KEY,
+    btc_block_hash BYTEA NULL,
+    btc_block_height BIGINT NULL
+);
+
+CREATE TRIGGER pop_basis_upsert AFTER INSERT OR DELETE OR UPDATE
+	ON pop_basis FOR EACH ROW EXECUTE PROCEDURE notify_event();
+
+COMMIT;