feat: add functional authentication

api/stores/read-store/database.ts

@@ -0,0 +1,14 @@
+import { RoleDocument } from "@spec/schemas/access/role.ts";
+import type { AccountDocument } from "@spec/schemas/account/account.ts";
+
+import { config } from "~config";
+import { getDatabaseAccessor } from "~libraries/database/accessor.ts";
+
+export const db = getDatabaseAccessor<{
+  accounts: AccountDocument;
+  roles: RoleDocument;
+}>(`${config.name}:read-store`);
+
+export function takeOne<TDocument>(documents: TDocument[]): TDocument | undefined {
+  return documents[0];
+}