Enhancement: Extract `Seconds`

[localheinz]

This pull request

• [x] extracts Seconds

[codecov[bot]]

Codecov Report

Merging #362 (670531e) into main (b6178e7) will increase coverage by 0.96%. The diff coverage is 88.57%.

@@             Coverage Diff              @@
##               main     #362      +/-   ##
============================================
+ Coverage     63.46%   64.43%   +0.96%     
- Complexity      102      107       +5     
============================================
  Files            21       22       +1     
  Lines           479      492      +13     
============================================
+ Hits            304      317      +13     
  Misses          175      175              

Files	Coverage Δ
src/Duration.php	100.00% <100.00%> (ø)
src/Exception/InvalidSeconds.php	100.00% <100.00%> (ø)
src/Formatter/DefaultDurationFormatter.php	100.00% <100.00%> (ø)
src/Seconds.php	100.00% <100.00%> (ø)
src/Time.php	100.00% <100.00%> (ø)
src/TimeKeeper.php	100.00% <100.00%> (ø)
src/Subscriber/TestPassedSubscriber.php	0.00% <0.00%> (ø)
src/Subscriber/TestPreparedSubscriber.php	0.00% <0.00%> (ø)
src/Extension.php	0.00% <0.00%> (ø)

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