Address spotless lint errors (#1138)

* Add spotless (with ktlint)

* Run spotlessApply

* screaming case screaming case screaming case

* Update PagerViewerAdapter.kt

* Update ReaderTransitionView.kt

app/src/main/java/eu/kanade/presentation/browse/SourcesScreen.kt

@@ -28,7 +28,7 @@ import tachiyomi.domain.source.model.Pin
 import tachiyomi.domain.source.model.Source
 import tachiyomi.i18n.MR
 import tachiyomi.presentation.core.components.ScrollbarLazyColumn
-import tachiyomi.presentation.core.components.material.SecondaryItemAlpha
+import tachiyomi.presentation.core.components.material.SECONDARY_ALPHA
 import tachiyomi.presentation.core.components.material.padding
 import tachiyomi.presentation.core.components.material.topSmallPaddingValues
 import tachiyomi.presentation.core.i18n.stringResource
@@ -148,7 +148,7 @@ private fun SourcePinButton(
         MaterialTheme.colorScheme.primary
     } else {
         MaterialTheme.colorScheme.onBackground.copy(
-            alpha = SecondaryItemAlpha,
+            alpha = SECONDARY_ALPHA,
         )
     }
     val description = if (isPinned) MR.strings.action_unpin else MR.strings.action_pin