Fix broken URL in project file (#27)

- Fix package project URL to point at https://ghul.dev

Merge 7969408 into 0251693

Fix broken badge in README.md (#26)

- Fix the CI/CD shields.io badge in the README.md
- Bump the dependency versions in the example .ghulproj file in the README.md

Merge 1145e8a into 03232f6

Add ghūl logo (#25)

- Add the ghūl logo to the NuGet package

Merge 02a329d into 756cac3

Merge 8b19d97 into 756cac3

Update to .NET 8 (#24)

- Bump TargetFramework to 'net8.0' in .ghulproj
- Update CI/CD pipeline to run on .NET 8 and Ubuntu 22.04
- Update project website property to point at https://ghul.dev
- Reference latest version of compiler tool

Merge 11cef90 into d2b27b5

Merge dbb59dc into d2b27b5