feat: move custom logo setting to api

pkg/config/config.go

@@ -63,6 +63,7 @@ const (
 	ServiceEnableUserDeletion    Key = `service.enableuserdeletion`
 	ServiceMaxAvatarSize         Key = `service.maxavatarsize`
 	ServiceAllowIconChanges      Key = `service.allowiconchanges`
+	ServiceCustomLogoURL         Key = `service.customlogourl`
 
 	SentryEnabled         Key = `sentry.enabled`
 	SentryDsn             Key = `sentry.dsn`

pkg/routes/static.go

@@ -79,7 +79,7 @@ func serveIndexFile(c echo.Context, assetFs http.FileSystem) (err error) {
 		if config.ServiceAllowIconChanges.GetBool() {
 			data["ALLOW_ICON_CHANGES"] = "true"
 		}
-		data["CUSTOM_LOGO_URL"] = "" // TODO
+		data["CUSTOM_LOGO_URL"] = config.ServiceCustomLogoURL.GetString()
 
 		err = tmpl.Execute(&tplOutput, data)
 		if err != nil {