Add "Rotate wide pages to fit" setting for paged reader

Originally authored in #7983

Co-authored-by: timothyng-164 <timothyng-164@users.noreply.github.com>
(cherry picked from commit 953720472fe64ef488ecae7ae7fea453b8c7c68b)

# Conflicts:
#	app/src/main/java/eu/kanade/tachiyomi/ui/reader/setting/ReaderReadingModeSettings.kt
#	app/src/main/java/eu/kanade/tachiyomi/ui/reader/viewer/pager/PagerConfig.kt
#	app/src/main/java/eu/kanade/tachiyomi/ui/reader/viewer/pager/PagerPageHolder.kt
#	app/src/main/res/layout/reader_pager_settings.xml

core/src/main/java/tachiyomi/core/util/system/ImageUtil.kt

@@ -8,6 +8,7 @@ import android.graphics.BitmapFactory
 import android.graphics.BitmapRegionDecoder
 import android.graphics.Canvas
 import android.graphics.Color
+import android.graphics.Matrix
 import android.graphics.Rect
 import android.graphics.drawable.ColorDrawable
 import android.graphics.drawable.Drawable
@@ -152,6 +153,23 @@ object ImageUtil {
         return ByteArrayInputStream(output.toByteArray())
     }
 
+    fun rotateImage(imageStream: InputStream, degrees: Float): InputStream {
+        val imageBytes = imageStream.readBytes()
+
+        val imageBitmap = BitmapFactory.decodeByteArray(imageBytes, 0, imageBytes.size)
+        val rotated = rotateBitMap(imageBitmap, degrees)
+
+        val output = ByteArrayOutputStream()
+        rotated.compress(Bitmap.CompressFormat.JPEG, 100, output)
+
+        return ByteArrayInputStream(output.toByteArray())
+    }
+
+    private fun rotateBitMap(bitmap: Bitmap, degrees: Float): Bitmap {
+        val matrix = Matrix().apply { postRotate(degrees) }
+        return Bitmap.createBitmap(bitmap, 0, 0, bitmap.width, bitmap.height, matrix, true)
+    }
+
     /**
      * Split the image into left and right parts, then merge them into a
      * new vertically-aligned image.