Inkhud battery icon improvements. (#9513)

* Inkhud battery icon improvements.
Fixes the battery icon draining from the flat side towards the bump, which is backwards from general design language seen on most devices
By request of kr0n05_ on discord, adds the ability to mirror the battery icon which fixes that issue in another way, and is also a common design seen on other devices.

* Remove option for icon mirroring

* Add border + dither to battery to prevent font overlap

* Fix trunk format

* Code cleanup, courtesy of Xaositek.

src/graphics/niche/InkHUD/WindowManager.cpp

@@ -510,10 +510,10 @@ void InkHUD::WindowManager::placeSystemTiles()
     const uint16_t batteryIconWidth = batteryIconHeight * 1.8;
     inkhud->getSystemApplet("BatteryIcon")
         ->getTile()
-        ->setRegion(inkhud->width() - batteryIconWidth, // x
-                    2,                                  // y
-                    batteryIconWidth,                   // width
-                    batteryIconHeight);                 // height
+        ->setRegion(inkhud->width() - batteryIconWidth - 1, // x
+                    1,                                      // y
+                    batteryIconWidth + 1,                   // width
+                    batteryIconHeight + 2);                 // height
 
     // Note: the tiles of placeholder and menu applets are manipulated specially
     // - menuApplet borrows user tiles