Add keyboard shortcuts: new, escape, and hard break (#552)

* Add keyboard shortcuts: new, escape, and hard break

* Add preferences modal

* Remove code accidentally re-added due to rebase

* Fix incorrect copy and lint

* Put stuff back so diffs are clearer

* Re-add invite codes to settings

* Address comments

* Tune the copy

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Co-authored-by: Paul Frazee <pfrazee@gmail.com>

src/view/com/modals/AltImageRead.tsx

@@ -34,8 +34,8 @@ export function Component({altText}: Props) {
         testID="altTextImageSaveBtn"
         onPress={onPress}
         accessibilityRole="button"
-        accessibilityLabel="Save"
-        accessibilityHint="Save alt text">
+        accessibilityLabel="Done"
+        accessibilityHint="Closes alt text modal">
         <LinearGradient
           colors={[gradients.blueLight.start, gradients.blueLight.end]}
           start={{x: 0, y: 0}}