feat!: introduce ChronoTomatoVersion

- set version from `runtime/debug.Main.Version`
- use latest git tag as fallback
- allow version to be overwritten via ldflags
- this will break `go build .` and `go install .`

cmd/client/app.go

@@ -2,8 +2,11 @@ package client
 
 import (
 	"flag"
+	"fmt"
+	"os"
 
 	"git.smsvc.net/pomodoro/ChronoTomato/internal/helper"
+	"git.smsvc.net/pomodoro/ChronoTomato/internal/metadata"
 	"git.smsvc.net/pomodoro/ChronoTomato/internal/websocket"
 	ChronoTomato "git.smsvc.net/pomodoro/ChronoTomato/pkg/models"
 	GoTomato "git.smsvc.net/pomodoro/GoTomato/pkg/models"
@@ -68,9 +71,15 @@ func Start() {
 		parameter_url        = flag.String("url", "", "GoTomato Server URL (eg ws://localhost:8080/ws)")
 		parameter_password   = flag.String("password", "", "Control password for pomodoro session")
 		parameter_configfile = flag.String("config", defaultConfigFile, "Path to config file")
+		showVersion          = flag.Bool("version", false, "Show Version")
 	)
 	flag.Parse()
 
+	if *showVersion {
+		fmt.Printf("ChronoTomato v%v\n", metadata.ChronoTomatoVersion)
+		os.Exit(0)
+	}
+
 	// read passed config file or try to use default config
 	if *parameter_configfile != defaultConfigFile {
 		config = helper.ParseConfig(*parameter_configfile)