fix: cron compatibility to unix standard - 5 tokens

[yamilmedina]

In this PR

Fix

• Standard compliance by default with Unix 5 tokens.

Chore

• Adds tests coverage for more cases.
• Move packages around.

[github-actions]

Test Results

49 tests  +44   49 ✔️ +44   0s ⏱️ ±0s
  1 suites ±  0     0 💤 ±  0 
  1 files   ±  0     0 ❌ ±  0 

Results for commit a91a27b. ± Comparison against base commit 211b2c7.

This pull request removes 5 and adds 49 tests. Note that renamed tests count towards both.

io.github.yamilmedina.naturalkron.NaturalKronExpressionParserTest ‑ given a partial invalid expression, then parse valid part()
io.github.yamilmedina.naturalkron.NaturalKronExpressionParserTest ‑ given an invalid expression, then raise KronException()
io.github.yamilmedina.naturalkron.NaturalKronExpressionParserTest ‑ given every day at 9am is parsed, then returns every day expression with date()
io.github.yamilmedina.naturalkron.NaturalKronExpressionParserTest ‑ given every friday at 1015am is parsed, then returns every monday expression()
io.github.yamilmedina.naturalkron.NaturalKronExpressionParserTest ‑ given every monday is parsed, then returns every monday expression()

io.github.yamilmedina.kron.NaturalKronParserTest ‑ [10] CASE_10
io.github.yamilmedina.kron.NaturalKronParserTest ‑ [11] CASE_11
io.github.yamilmedina.kron.NaturalKronParserTest ‑ [12] CASE_12
io.github.yamilmedina.kron.NaturalKronParserTest ‑ [13] CASE_13
io.github.yamilmedina.kron.NaturalKronParserTest ‑ [14] CASE_14
io.github.yamilmedina.kron.NaturalKronParserTest ‑ [15] CASE_15
io.github.yamilmedina.kron.NaturalKronParserTest ‑ [16] CASE_16
io.github.yamilmedina.kron.NaturalKronParserTest ‑ [17] CASE_17
io.github.yamilmedina.kron.NaturalKronParserTest ‑ [18] CASE_18
io.github.yamilmedina.kron.NaturalKronParserTest ‑ [19] CASE_19
…

♻️ This comment has been updated with latest results.

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