Add new fonts to Android

Some new fonts:

- Atkinson Hyperlegible
- Newsreader
- LXGW WenKai

android/Omnivore/app/src/main/java/app/omnivore/omnivore/ui/reader/WebReaderContent.kt

@@ -15,6 +15,9 @@ enum class WebFont(val displayText: String, val rawValue: String) {
   ROBOTO("Roboto", "Roboto"),
   CRIMSON_TEXT("Crimson Text", "Crimson Text"),
   SOURCE_SERIF_PRO("Source Serif Pro", "Source Serif Pro"),
+  NEWSREADER("Newsreader", "Newsreader"),
+  LXGWWENKAI("LXGW WenKai", "LXGWWenKai"),
+  ATKINSON_HYPERLEGIBLE("Atkinson Hyperlegible", "AtkinsonHyperlegible"),
 }
 
 enum class ArticleContentStatus(val rawValue: String) {

android/Omnivore/app/src/main/java/app/omnivore/omnivore/ui/reader/WebReaderViewModel.kt

@@ -263,7 +263,7 @@ class WebReaderViewModel @Inject constructor(
 
     val storedFontFamily = datastoreRepo.getString(DatastoreKeys.preferredWebFontFamily) ?: WebFont.SYSTEM.rawValue
     val storedThemePreference = datastoreRepo.getString(DatastoreKeys.preferredTheme) ?: "System"
-    val storedWebFont = WebFont.values().first { it.rawValue == storedFontFamily }
+    val storedWebFont = WebFont.values().firstOrNull { it.rawValue == storedFontFamily } ?: WebFont.values().first()
 
     val prefersHighContrastFont = datastoreRepo.getString(DatastoreKeys.prefersWebHighContrastText) == "true"
     val prefersJustifyText = datastoreRepo.getString(DatastoreKeys.prefersJustifyText) == "true"