feat: add version command to display application version

cmd/version.go

@@ -0,0 +1,23 @@
+package cmd
+
+import (
+	"fmt"
+	"os"
+	"s1d3sw1ped/SteamCache2/version"
+
+	"github.com/spf13/cobra"
+)
+
+// versionCmd represents the version command
+var versionCmd = &cobra.Command{
+	Use:   "version",
+	Short: "prints the version of SteamCache2",
+	Long:  `Prints the version of SteamCache2. This command is useful for checking the version of the application.`,
+	Run: func(cmd *cobra.Command, args []string) {
+		fmt.Fprintln(os.Stderr, "SteamCache2", version.Version)
+	},
+}
+
+func init() {
+	rootCmd.AddCommand(versionCmd)
+}