feat: add server name and version to all responses

This is inline with other Subsonic compatible servers, like funkwhale, madsonic, ampache...

banner.go

@@ -4,33 +4,17 @@ import (
 	"fmt"
 	"strings"
 
+	"github.com/deluan/navidrome/consts"
 	"github.com/deluan/navidrome/static"
 )
 
-var (
-	// This will be set in build time. If not, version will be set to "dev"
-	gitTag string
-	gitSha string
-)
-
-// Formats:
-// dev
-// v0.2.0 (5b84188)
-// master (9ed35cb)
-func getVersion() string {
-	if gitSha == "" {
-		return "dev"
-	}
-	return fmt.Sprintf("%s (%s)", gitTag, gitSha)
-}
-
 func getBanner() string {
 	data, _ := static.Asset("banner.txt")
 	return strings.TrimSuffix(string(data), "\n")
 }
 
 func ShowBanner() {
-	version := "Version: " + getVersion()
+	version := "Version: " + consts.Version()
 	padding := strings.Repeat(" ", 52-len(version))
 	fmt.Printf("%s%s%s\n\n", getBanner(), padding, version)
 }