Drop Swift 5.10 (#15)

* Update to Swift 6

* Update to Swift Testing

* Small touch-ups

* Update Tests/ZipTests/ZipTests.swift

Co-authored-by: Gwynne Raskind <gwynne@darkrainfall.org>

* Use `isEmpty` instead of `count`

* Update Package.swift

Co-authored-by: Gwynne Raskind <gwynne@darkrainfall.org>

* Remove Foundation in Package.swift

* Update README.md

Co-authored-by: Gwynne Raskind <gwynne@darkrainfall.org>

* Update Package.swift

Co-authored-by: Gwynne Raskind <gwynne@darkrainfall.org>

* Use `actions/checkout@v5`

* Update Windows workflow

* Try fixing Windows workflow

---------

Co-authored-by: Gwynne Raskind <gwynne@darkrainfall.org>

Drop Swift 5.9 (#14)

Android support (#13)

Windows support and other various changes (#10)

### Issue #9 

Originally authored by @compnerd in marmelroy#246

- Add support for Windows
- Add Windows CI tests
- Drop support for Swift 5.8
- Adopt `swift-format`
- Add CI for iOS and MUSL
- Various bug fixes

Fix inconsistent behaviour between macOS and Linux (#8)

* Fix inconsistent behaviour between macOS and Linux

* Check for `.zip` extension in quick functions

Fix unzip bug (#7)

* Fix unzip bug

Fix README.md (#6)

Add Codecov token (#3)

Unwrap `filePointer`