build(release): add tag-based release automation and version metadata

src/command/version.go

@@ -0,0 +1,26 @@
+package command
+
+import (
+	"fmt"
+
+	"github.com/assimon/luuu/config"
+	"github.com/spf13/cobra"
+)
+
+var versionCmd = &cobra.Command{
+	Use:   "version",
+	Short: "Print build version information",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		_, err := fmt.Fprintf(cmd.OutOrStdout(),
+			"version: %s\ncommit: %s\nbuilt: %s\n",
+			config.GetAppVersion(),
+			config.GetBuildCommit(),
+			config.GetBuildDate(),
+		)
+		return err
+	},
+}
+
+func init() {
+	rootCmd.AddCommand(versionCmd)
+}