feat: Add version print

internal/howmuch/howmuch.go

@@ -28,6 +28,7 @@ import (
 	"net/http"
 
 	"git.vinchent.xyz/vinchent/howmuch/internal/pkg/log"
+	"git.vinchent.xyz/vinchent/howmuch/pkg/version/verflag"
 	"github.com/fsnotify/fsnotify"
 	"github.com/gin-gonic/gin"
 	"github.com/spf13/cobra"
@@ -48,6 +49,9 @@ func NewHowMuchCommand() *cobra.Command {
 		Long: `howmuch is a expense-sharing application that can help friends
 to share their expense of an event or a trip`,
 		RunE: func(cmd *cobra.Command, args []string) error {
+			// print version and exit?
+			verflag.PrintVersion()
+
 			// init log
 			log.Init(logOptions())
 			// Sync flush the buffer
@@ -78,6 +82,9 @@ to share their expense of an event or a trip`,
 	// when this action is called directly.
 	rootCmd.Flags().BoolP("toggle", "t", false, "Help message for toggle")
 
+	// --version
+	verflag.AddFlags(rootCmd.PersistentFlags())
+
 	return rootCmd
 }