Create request migration

scanner/migrations/000001_request.up.sql

@@ -0,0 +1,18 @@
+begin;
+
+create type scanner.request_kind as enum('episode', 'movie');
+
+create table scanner.requests(
+	pk serial primary key,
+	id uuid not null default gen_random_uuid() unique,
+	kind scanner.request_kind not null,
+	title text not null,
+	year integer,
+	external_id jsonb not null default '{}'::jsonb,
+
+	created_at timestamptz not null default now()::timestamptz,
+
+	constraint unique_kty (kind, title, year)
+);
+
+commit;