feat: Lyra screens (#732)

Implements Lyra theme for some more Crosspoint screens:

![IMG_7960
Medium](https://github.com/user-attachments/assets/5d97d91d-e5eb-4296-bbf4-917e142d9095)
![IMG_7961
Medium](https://github.com/user-attachments/assets/02d61964-2632-45ff-83c7-48b95882eb9c)
![IMG_7962
Medium](https://github.com/user-attachments/assets/cf42d20f-3a85-4669-b497-1cac4653fa5a)
![IMG_7963
Medium](https://github.com/user-attachments/assets/a8f59c37-db70-407c-a06d-3e40613a0f55)
![IMG_7964
Medium](https://github.com/user-attachments/assets/0fdaac72-077a-48f6-a8c5-1cd806a58937)
![IMG_7965
Medium](https://github.com/user-attachments/assets/5169f037-8ba8-4488-9a8a-06f5146ec1d9)

- A bit of refactoring for list scrolling logic

---

While CrossPoint doesn't have restrictions on AI tools in contributing,
please be transparent about their usage as it
helps set the right context for reviewers.

Did you use AI tools to help write this code? _**NO**_

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Co-authored-by: Dave Allie <dave@daveallie.com>

src/activities/settings/KOReaderSettingsActivity.h

@@ -23,7 +23,7 @@ class KOReaderSettingsActivity final : public ActivityWithSubactivity {
  private:
   ButtonNavigator buttonNavigator;
 
-  int selectedIndex = 0;
+  size_t selectedIndex = 0;
   const std::function<void()> onBack;
 
   void handleSelection();