Init: bootstrap go module with basic framework

migrations/202509250727_create_table_guild.tx.up.sql

@@ -0,0 +1,7 @@
+CREATE TABLE "guild" (
+  id     integer PRIMARY KEY GENERATED BY DEFAULT AS IDENTITY,
+  dc_id  character varying UNIQUE,
+  name   character varying NOT NULL,
+
+  auto_role_log_chan_id  character varying
+);