feat: add admin table

migrations/20241005120725_create_admin_table.postgres.down.sql

@@ -0,0 +1,2 @@
+DROP TABLE IF EXISTS "admin";
+DROP SEQUENCE IF EXISTS admin_id_seq;

migrations/20241005120725_create_admin_table.postgres.up.sql

@@ -0,0 +1,9 @@
+CREATE SEQUENCE admin_id_seq INCREMENT 1 MINVALUE 1 MAXVALUE 2147483647 CACHE 1;
+
+CREATE TABLE "public"."admin" (
+    "id" integer DEFAULT nextval('admin_id_seq') NOT NULL,
+    "email" character varying(255) NOT NULL,
+    "password" character varying(255) NOT NULL,
+    "access_level" integer NOT NULL,
+    CONSTRAINT "admin_pkey" PRIMARY KEY ("id")
+) WITH (oids = false);