feat(cli,packagemanager): implemented first working windows and macos versions

in order to implement sst for windows and macos the structure of
osmanager has been changed.
Now osmanager has a new field pm, which contains the specific
packagemanager for the os.
Linux packagemanagers have been implemented as packagemanagers on their
own.

cmd/remove_cmd.go

@@ -3,6 +3,7 @@ package cmd
 import (
 	"fmt"
 	"log"
+	"runtime"
 	"system_setup_tool/utils"
 
 	pm "system_setup_tool/packagemanager"
@@ -24,14 +25,15 @@ var removeCmd = &cobra.Command{
 			managerName = "homebrew"
 		}
 		switch managerName {
-		case "os":
-			sudoPassword, err := utils.GetSudoPassword()
-			if err != nil {
-				log.Fatal(err)
-			}
-			osManager := pm.NewOSManager(sudoPassword)
-			if err := osManager.Install([]string{packageName}); err != nil {
-				log.Printf("error: %v\n", err)
+		case "OS Package Manager":
+			if runtime.GOOS != "windows" {
+				sudoPassword, err := utils.GetSudoPassword()
+				if err != nil {
+					log.Fatal(err)
+				}
+				manager = pm.NewOSManager(sudoPassword)
+			} else {
+				manager = pm.NewOSManager("")
 			}
 		case "homebrew":
 			manager = &pm.HomebrewManager{}