feat: Clock component

[devnix]

Here is a little POC to see if you like it before digging for 100% code coverage/sat

[coveralls]

Pull Request Test Coverage Report for Build 11661132391

Details

• 6 of 13 (46.15%) changed or added relevant lines in 3 files are covered.
• 2 unchanged lines in 1 file lost coverage.
• Overall coverage decreased (-0.1%) to 98.565%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/Psl/Clock/FrozenClock.php	0	3	0.0%
src/Psl/Clock/SystemClock.php	0	4	0.0%

Files with Coverage Reduction	New Missed Lines	%
src/Psl/DateTime/Internal/high_resolution_time.php	2	90.48%

Totals
Change from base Build 11369981368:	-0.1%
Covered Lines:	5358
Relevant Lines:	5436

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💛 - Coveralls