GitHub: Added CI workflow

[Lamparter]

Resolved / Related Issues

• Closes GitHub: Add CI #25

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Adds a CI workflow to CubeKit

[Lamparter]

CI works!
The builds are failing because Riverside.Extensions.Accountability hasn't actually been published yet (so on Release mode they fail)

[Lamparter]

The main thing is the CD: it should be similar to the Files UI controls CD

• Detect if CurrentVersion.props was changed in a commit/PR
• Publish

Problem with this is that there is an ORDER that the packages must be published in, and it will take time for each package to be reviewed by the Nuget server.

[Copilot]

PR Overview

This PR adds CI and CD workflows to CubeKit to automate the build, test, and deployment processes.

• Introduces a CD workflow that builds, packages, and publishes CubeKit to NuGet.
• Introduces a CI workflow that validates formatting (with XAML Styler) and builds multiple project configurations and targets.

Reviewed Changes

File	Description
.github/workflows/cd.yml	Adds a CD workflow for building, packing, and publishing CubeKit
.github/workflows/ci.yml	Adds a CI workflow for formatting checks and multi-configuration builds

Copilot reviewed 8 out of 8 changed files in this pull request and generated 1 comment.

[Lamparter]

Everything works and is finished
Let's just wait for the final CI run and then after it all passes it's merge time!