Add birth date gating to moderation settings (#1435)

* Add birth date preference, modal to set, link in settings, and age gate in moderation

* Styling fixes for android

* Fix types

src/view/com/modals/Modal.web.tsx

@@ -27,6 +27,7 @@ import * as ContentFilteringSettingsModal from './ContentFilteringSettings'
 import * as ContentLanguagesSettingsModal from './lang-settings/ContentLanguagesSettings'
 import * as PostLanguagesSettingsModal from './lang-settings/PostLanguagesSettings'
 import * as ModerationDetailsModal from './ModerationDetails'
+import * as BirthDateSettingsModal from './BirthDateSettings'
 
 export const ModalsContainer = observer(function ModalsContainer() {
   const store = useStores()
@@ -107,6 +108,8 @@ function Modal({modal}: {modal: ModalIface}) {
     element = <EditImageModal.Component {...modal} />
   } else if (modal.name === 'moderation-details') {
     element = <ModerationDetailsModal.Component {...modal} />
+  } else if (modal.name === 'birth-date-settings') {
+    element = <BirthDateSettingsModal.Component />
   } else {
     return null
   }