feat: [sc-858]: Move Benchmark to DateTime package

[hassila]

Description

Remove date time specific code from benchmark package and use definitions from DateTime instead.

How Has This Been Tested?

Manual testing of basic benchmarks and tests.

Minimal checklist:

• I have performed a self-review of my own code
• I have added DocC code-level documentation for any public interfaces exported by the package
• I have added unit and/or integration tests that prove my fix is effective or that my feature works

[shortcut-integration]

This pull request has been linked to Shortcut Story #858: Remove Timestamp from DataModel, use UTC Clock Instant from DateTime package.

[github-actions]

Pull request benchmark comparison [ubuntu-latest] with 'main' run at 2022-11-29T14:23:09+00:00

[codecov]

Codecov Report

Merging #4 (21e3b44) into main (26f1193) will increase coverage by 8.06%.
The diff coverage is 55.38%.

❗ Current head 21e3b44 differs from pull request most recent head e19fd02. Consider uploading reports for the commit e19fd02 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main       #4      +/-   ##
==========================================
+ Coverage   36.76%   44.83%   +8.06%     
==========================================
  Files           3        5       +2     
  Lines         136      261     +125     
==========================================
+ Hits           50      117      +67     
- Misses         86      144      +58     

Impacted Files	Coverage Δ
Sources/DateTime/Convenience.swift	0.00% <0.00%> (ø)
Sources/DateTime/InternalUTCClock.swift	43.21% <0.00%> (-5.40%)	⬇️
Sources/DateTime/BenchmarkClock.swift	53.06% <53.06%> (ø)
Tests/DateTimeTests/DateTime.swift	100.00% <100.00%> (ø)

Impacted Files	Coverage Δ
Sources/DateTime/Convenience.swift	0.00% <0.00%> (ø)
Sources/DateTime/InternalUTCClock.swift	43.21% <0.00%> (-5.40%)	⬇️
Sources/DateTime/BenchmarkClock.swift	53.06% <53.06%> (ø)
Tests/DateTimeTests/DateTime.swift	100.00% <100.00%> (ø)

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