[Refactor] date, time, datetime, range and value

[JanGalek]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 51.59574% with 91 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
date/range.go	0.00%	45 Missing ⚠️
time/range.go	0.00%	45 Missing ⚠️
datetime.go	92.30%	1 Missing ⚠️

❌ Your patch status has failed because the patch coverage (51.59%) is below the target coverage (90.00%). You can increase the patch coverage or adjust the target coverage.
❌ Your project status has failed because the head coverage (71.85%) is below the target coverage (90.00%). You can increase the head coverage or adjust the target coverage.

Files with missing lines	Coverage Δ
date/date.go	100.00% <100.00%> (ø)
date/value.go	100.00% <100.00%> (ø)
time/time.go	100.00% <100.00%> (ø)
time/value.go	100.00% <100.00%> (ø)
value.go	100.00% <100.00%> (ø)
datetime.go	89.21% <92.30%> (+25.95%)	⬆️
date/range.go	0.00% <0.00%> (ø)
time/range.go	0.00% <0.00%> (ø)