Update Visibility.tsx

https://github.com/tooot-app/app/issues/279

src/components/Timeline/Shared/HeaderShared/Visibility.tsx

@@ -15,6 +15,30 @@ const HeaderSharedVisibility = React.memo(
     const { colors } = useTheme()
 
     switch (visibility) {
+      case 'public':
+        return (
+          <Icon
+            accessibilityLabel={t(
+              'shared.header.shared.visibility.private.accessibilityLabel'
+            )}
+            name='Globe'
+            size={StyleConstants.Font.Size.S}
+            color={colors.secondary}
+            style={styles.visibility}
+          />
+        )
+      case 'unlisted':
+        return (
+          <Icon
+            accessibilityLabel={t(
+              'shared.header.shared.visibility.private.accessibilityLabel'
+            )}
+            name='Unlock'
+            size={StyleConstants.Font.Size.S}
+            color={colors.secondary}
+            style={styles.visibility}
+          />
+        )
       case 'private':
         return (
           <Icon