feat: Add GitRepoRegistration cmdlets (#5)

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

Refs: #5, #6

src/PowershellModule/PostBuild.ps1

@@ -0,0 +1,28 @@
+<#
+    .SYNOPSIS
+    Removes all non-core files from build output
+#>
+param(
+    [Parameter(ValueFromPipeline = $true, Position = 0, Mandatory = $true)]
+    $targetDir
+)
+
+$nativeSqliteDllLocation = "$( $targetDir )runtimes\win-x64\native\e_sqlite3.dll";
+
+if ($false -eq (Test-Path $nativeSqliteDllLocation))
+{
+    Write-Error "POST BUILD FAILED: Unable to locate $nativeSqliteDllLocation"
+}
+
+Write-Host "Copying '$nativeSqliteDllLocation' to '$targetDir'"
+Copy-Item -Path $nativeSqliteDllLocation -Destination $targetDir
+
+# Because we use CopyLocalLockFileAssemblies Files that are needed for the module
+$allowList = @(
+    "ModuleCore*"
+    "PowershellModule*"
+    "*SQLite*"
+    "data"
+)
+Write-Host "Removing all non-module required files from '$targetDir'"
+Get-ChildItem -Path $targetDir -exclude $allowList | Remove-Item -Recurse