feat: split status bar setting (#733)

## Summary

This PR aims to reduce the complexity of the status bar by splitting the
setting into 5:
- Chapter Page Count
- Book Progress %
- Progress Bar
- Chapter Title
- Battery Indicator

These are located within the new StausBarSettings activity, which also
shows a preview of the bar the user has created

<img width="513" height="806" alt="image"
src="https://github.com/user-attachments/assets/cdf852fb-15d8-4da2-a74f-fd69294d7b05"
/>


<img width="483" height="797" alt="image"
src="https://github.com/user-attachments/assets/66fc0c0d-ee51-4d31-b70d-e2bc043205d1"
/>


When updating from a previous version, the user's past settings are
honoured.

## Additional Context

The PR aims to remove any duplication of status bar code where possible,
and extracts the status bar rendering into a new component - StatusBar

It also adds a new (optional) padding option to the progress bar to
allow the status bar to be shifted upwards - this is only intended for
use in the settings.

---

### AI Usage

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 - although did help to decode some C++ errors

---------

Co-authored-by: Arthur Tazhitdinov <lisnake@gmail.com>

src/activities/settings/SettingsActivity.cpp

@@ -12,6 +12,7 @@
 #include "MappedInputManager.h"
 #include "OtaUpdateActivity.h"
 #include "SettingsList.h"
+#include "StatusBarSettingsActivity.h"
 #include "activities/network/WifiSelectionActivity.h"
 #include "components/UITheme.h"
 #include "fontIds.h"
@@ -51,6 +52,7 @@ void SettingsActivity::onEnter() {
   systemSettings.push_back(SettingInfo::Action(StrId::STR_CLEAR_READING_CACHE, SettingAction::ClearCache));
   systemSettings.push_back(SettingInfo::Action(StrId::STR_CHECK_UPDATES, SettingAction::CheckForUpdates));
   systemSettings.push_back(SettingInfo::Action(StrId::STR_LANGUAGE, SettingAction::Language));
+  readerSettings.push_back(SettingInfo::Action(StrId::STR_CUSTOMISE_STATUS_BAR, SettingAction::CustomiseStatusBar));
 
   // Reset selection to first category
   selectedCategoryIndex = 0;
@@ -181,6 +183,9 @@ void SettingsActivity::toggleCurrentSetting() {
       case SettingAction::RemapFrontButtons:
         enterSubActivity(new ButtonRemapActivity(renderer, mappedInput, onComplete));
         break;
+      case SettingAction::CustomiseStatusBar:
+        enterSubActivity(new StatusBarSettingsActivity(renderer, mappedInput, onComplete));
+        break;
       case SettingAction::KOReaderSync:
         enterSubActivity(new KOReaderSettingsActivity(renderer, mappedInput, onComplete));
         break;
@@ -259,4 +264,4 @@ void SettingsActivity::render(Activity::RenderLock&&) {
 
   // Always use standard refresh for settings screen
   renderer.displayBuffer();
-}
+}