Added server implementation and serve command

cmd/serve.go

@@ -0,0 +1,37 @@
+//go:build server || all
+// +build server all
+
+package cmd
+
+import (
+	"errors"
+	"fmt"
+	"net/http"
+	"os"
+
+	"github.com/OpenCHAMI/configurator/internal/server"
+	"github.com/sirupsen/logrus"
+	"github.com/spf13/cobra"
+)
+
+var serveCmd = &cobra.Command{
+	Use:   "serve",
+	Short: "Start configurator as a server and listen for requests",
+	Run: func(cmd *cobra.Command, args []string) {
+		// set up the routes and start the server
+		server := server.New()
+		err := server.Start(&config)
+		if errors.Is(err, http.ErrServerClosed) {
+			fmt.Printf("Server closed.")
+		} else if err != nil {
+			logrus.Errorf("failed to start server: %v", err)
+			os.Exit(1)
+		}
+	},
+}
+
+func init() {
+	serveCmd.Flags().StringVar(&config.Server.Host, "host", config.Server.Host, "set the server host")
+	serveCmd.Flags().IntVar(&config.Server.Port, "port", config.Server.Port, "set the server port")
+	rootCmd.AddCommand(serveCmd)
+}