Feature/time utilities

[owdax]

Description

This PR introduces comprehensive Time and TimeZone utilities to SwiftDevKit, providing developers with robust tools for handling time-related operations across different time zones. The implementation includes thorough testing and documentation.

Key Features Added:

1. Time Zone Conversion

   • Convert dates between different time zones
   • Proper handling of DST transitions
   • Support for all standard time zones

2. Date Formatting

   • Multiple format styles (date only, time only, full, short, long)
   • Locale-aware formatting
   • Time zone specific formatting

3. Time Zone Management

   • Access to most available time zones
   • Curated list of commonly used time zones
   • GMT offset calculations
   • DST transition detection and handling

Fixes #N/A (no specific issue ticket)

Type of change

• New feature (non-breaking change which adds functionality)
• Documentation update

Checklist:

• My code follows the style guidelines of SwiftDevKit
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

The implementation includes comprehensive test coverage for all features, including edge cases like DST transitions and various time zone scenarios. Documentation includes clear examples and use cases for each functionality.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 96.59319% with 17 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
...SwiftDevKitTests/Time/TimeZoneUtilitiesTests.swift	97.65%	5 Missing ⚠️
Sources/SwiftDevKit/Time/TimeUtilities.swift	94.73%	4 Missing ⚠️
Sources/SwiftDevKit/Time/TimeZoneUtilities.swift	96.39%	4 Missing ⚠️
...sts/SwiftDevKitTests/Time/TimeUtilitiesTests.swift	95.95%	4 Missing ⚠️

Files with missing lines	Coverage Δ
Sources/SwiftDevKit/Time/TimeUtilities.swift	94.73% <94.73%> (ø)
Sources/SwiftDevKit/Time/TimeZoneUtilities.swift	96.39% <96.39%> (ø)
...sts/SwiftDevKitTests/Time/TimeUtilitiesTests.swift	95.95% <95.95%> (ø)
...SwiftDevKitTests/Time/TimeZoneUtilitiesTests.swift	97.65% <97.65%> (ø)

[owdax]

Let's update docc later on