feat: add option to hide the login button from public-facing pages (#3922)

Co-authored-by: Henrique Dias <mail@hacdias.com>

frontend/src/utils/constants.ts

@@ -18,6 +18,7 @@ const enableExec: boolean = window.FileBrowser.EnableExec;
 const tusSettings = window.FileBrowser.TusSettings;
 const origin = window.location.origin;
 const tusEndpoint = `/api/tus`;
+const hideLoginButton = window.FileBrowser.HideLoginButton;
 
 export {
   name,
@@ -39,4 +40,5 @@ export {
   tusSettings,
   origin,
   tusEndpoint,
+  hideLoginButton,
 };