.NET standard interfaces

[Seramis]

Description

Introduced relevant .NET standard interfaces. Replaced Max with MaxValue and introduced MinValue for as required by standard IMinMaxValue<T> interface. Marked Max as obsolete. Synced README and PACKAGE files with updates. Added and adjusted unit tests.

Type of Change

• Bug fix (non-breaking change that fixes an issue)
• New feature (non-breaking change that adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation update
• Other (please specify):

Checklist

• The PR is submitted to the correct branch (main).
• My code follows the project's coding style. (.editorconfig)
• I have commented my code, particularly in hard-to-understand areas and public interfaces.
• I have added or updated tests for the changes I made.
• All new and existing tests passed.
• I have updated the documentation where applicable.

Additional Notes

ulid.Max has been marked as obsolete - ulid.MaxValue is the property that should be used based on .NET's IMinMaxValue<> interface. ulid.Empty is kept for semantic clarity.