Require authentication to participate in chat (#4762)

* feat(chat): require authentication to participate in chat

* fix: it's pretty much impossible to bypass the auth requirement, addressing review feedback anyway

* feat(chat): render chat text input as disabled if chat auth is required

* Commit updated API documentation

---------

Co-authored-by: Owncast <owncast@owncast.online>

web/types/config-section.ts

@@ -154,6 +154,7 @@ export interface ConfigDetails {
   chatDisabled: boolean;
   chatSpamProtectionEnabled: boolean;
   chatSlurFilterEnabled: boolean;
+  chatRequireAuthentication: boolean;
   federation: Federation;
   notifications: NotificationsConfig;
   chatJoinMessagesEnabled: boolean;

web/types/localization.ts

@@ -68,8 +68,7 @@ export const Localization = {
       deniedTitle: 'Frontend.BrowserNotifyModal.deniedTitle',
       deniedDescription: 'Frontend.BrowserNotifyModal.deniedDescription',
       mainDescription: 'Frontend.BrowserNotifyModal.mainDescription',
-      learnMoreAboutNotifications:
-        'Frontend.BrowserNotifyModal.learnMoreAboutNotifications',
+      learnMoreAboutNotifications: 'Frontend.BrowserNotifyModal.learnMoreAboutNotifications',
       errorTitle: 'Frontend.BrowserNotifyModal.errorTitle',
       errorMessage: 'Frontend.BrowserNotifyModal.errorMessage',
     },
@@ -107,6 +106,7 @@ export const Localization = {
       userLeft: 'Frontend.Chat.userLeft',
       nameChangeText: 'Frontend.Chat.nameChangeText',
       moderatorNotification: 'Frontend.Chat.moderatorNotification',
+      authenticateToChat: 'Frontend.Chat.authenticateToChat',
     },
 
     // Follow modal component