add migrations to support type AAAA

migrations/00002_support_aaaa.sql

@@ -0,0 +1,33 @@
+-- +goose Up
+-- +goose StatementBegin
+CREATE TABLE records_new (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    domain TEXT NOT NULL,
+    ip TEXT NOT NULL,
+    record_type TEXT DEFAULT 'A',
+    UNIQUE(domain, record_type)
+);
+
+INSERT INTO records_new (id, domain, ip, record_type)
+SELECT id, domain, ip, record_type FROM records;
+
+DROP TABLE records;
+
+ALTER TABLE records_new RENAME TO records;
+-- +goose StatementEnd
+
+-- +goose Down
+-- +goose StatementBegin
+CREATE TABLE records_old (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    domain TEXT NOT NULL UNIQUE,
+    ip TEXT NOT NULL,
+    record_type TEXT DEFAULT 'A'
+);
+
+INSERT INTO records_old (id, domain, ip, record_type)
+SELECT id, domain, ip, record_type FROM records;
+
+DROP TABLE records;
+ALTER TABLE records_old RENAME TO records;
+-- +goose StatementEnd