feat(search): add structure search by postcode

scripts/data/structures.js

src/migrations/scripts/1669632514462-add-postcode.ts

src/structures/schemas/address.schema.ts

src/structures/services/aptic-structures.service.ts

src/structures/services/structures-search.service.ts

src/structures/services/structures.service.spec.ts

src/structures/services/structures.service.ts

src/structures/structures.controller.ts

test/mock/data/structures.mock.data.ts

test/mock/services/structures-for-search.mock.service.ts

test/mock/services/structures.mock.service.ts