feat: add quartz style cron capability #15

All 98 tests pass in 0s

    2 files ±0     2 suites ±0 0s ⏱️ ±0s
  98 tests ±0   98 ✔️ ±0 0 💤 ±0 0 ❌ ±0
294 runs ±0 294 ✔️ ±0 0 💤 ±0 0 ❌ ±0

Results for commit bd6fb4b. ± Comparison against earlier commit c381ea0.