Add support for msix installers (#123)

Add support for msixbundles and apps. Install for all users using Add/Remove-AppxProvisisionedPackage.

system/system_windows.go

@@ -156,6 +156,11 @@ func Install(dir string, ps *goolib.PkgSpec) error {
 		err = goolib.Run(exec.Command("wusa", args...), ec, out)
 	case ".exe":
 		err = goolib.Run(exec.Command(s, in.Args...), ec, out)
+	case ".msix", ".msixbundle":
+		// Add-AppxProvisionedPackage will install for all users.
+		installCmd := fmt.Sprintf("Add-AppxProvisionedPackage -online -PackagePath %v -SkipLicense", s)
+		args := append([]string{installCmd}, in.Args...)
+		err = goolib.Run(exec.Command("powershell", args...), ec, out)
 	default:
 		err = goolib.Exec(s, in.Args, in.ExitCodes, out)
 	}
@@ -185,6 +190,9 @@ func Uninstall(dir string, ps *goolib.PkgSpec) error {
 			un.Args = commands[1:]
 			un.Args = append([]string{"/qn", "/norestart"}, un.Args...)
 			filePath = un.Path
+		case ".msix", ".msixbundle":
+			un.Path = ps.Install.Path
+			filePath = un.Path
 		default:
 			r := regexp.MustCompile(`[^\s"]+|"([^"]*)"`)
 			u := uninstallString(ps.Name, "")
@@ -231,6 +239,11 @@ func Uninstall(dir string, ps *goolib.PkgSpec) error {
 		err = goolib.Run(exec.Command("wusa", args...), ec, out)
 	case ".exe":
 		err = goolib.Run(exec.Command(filePath, un.Args...), ec, out)
+	case ".msix", ".msixbundle":
+		s := strings.Split(filepath.Base(filePath), "_")[0]
+		removeCmd := fmt.Sprintf(`Get-AppxProvisionedPackage -online | Where {$_.DisplayName -match "%v*"} | Remove-AppProvisionedPackage -online -AllUsers`, s)
+		args := append([]string{removeCmd}, un.Args...)
+		err = goolib.Run(exec.Command("powershell", args...), ec, out)
 	default:
 		err = goolib.Exec(filepath.Join(dir, un.Path), un.Args, un.ExitCodes, out)
 	}