feat: Add GitRepoRegistration cmdlets (#5)

- adds GitRepoRegistration cmdlets
- adds basic tests for GitRepoRegistration implementations
- adds initial build project and scripts

Refs: #5, #6

build/BuildContext.cs

@@ -0,0 +1,61 @@
+using Cake.Common.IO;
+using Cake.Common.IO.Paths;
+using Cake.Core;
+using Cake.Core.IO;
+using Cake.Frosting;
+
+namespace Build;
+
+public class BuildContext : FrostingContext
+{
+	/// <summary>
+	/// Base source directory
+	/// </summary>
+	public DirectoryPath BaseSourceLocation { get; set; }
+
+	/// <summary>
+	/// Powershell module project folder
+	/// </summary>
+	public ConvertableDirectoryPath PowershellModuleProjectDirectory { get; set; }
+
+	/// <summary>
+	/// Powershell module csproj location
+	/// </summary>
+	public ConvertableFilePath PowershellModuleCsproj { get; set; }
+
+	/// <summary>
+	/// Output directory for built DLLs and powershell module manifest files
+	/// </summary>
+	public ConvertableDirectoryPath PowershellModuleOutputDir { get; set; }
+
+	/// <summary>
+	/// Path to powershell script that creates the module manifest files
+	/// </summary>
+	public ConvertableFilePath CreateModuleManifestScript { get; set; }
+
+	/// <summary>
+	/// Suffix to tag the build with, defaults to pre-release.
+	/// <para>
+	/// Immediately follows the version number and before the commit hash.
+	/// </para>
+	/// </summary>
+	public string BuildSuffix { get; set; }
+
+	/// <summary>
+	/// Disable the commit hash from being added
+	/// </summary>
+	public bool DisableCommitHash { get; set; }
+
+	public BuildContext(ICakeContext context)
+		: base(context)
+	{
+		BaseSourceLocation = context.Directory("../src").Path.MakeAbsolute(context.Environment);
+		PowershellModuleProjectDirectory = BaseSourceLocation + context.Directory("PowershellModule");
+		PowershellModuleCsproj = PowershellModuleProjectDirectory + context.File("PowershellModule.csproj");
+		PowershellModuleOutputDir = context.Directory("../") + context.Directory("output") + context.Directory("PowershellModule");
+		var buildScriptDirectory = context.Directory("./Scripts");
+		CreateModuleManifestScript = buildScriptDirectory + context.File("CreateModuleManifest.ps1");
+		BuildSuffix = context.Configuration.GetValue(nameof(BuildSuffix)) ?? "pre-release";
+		DisableCommitHash = context.Configuration.GetBoolValue(nameof(DisableCommitHash));
+	}
+}