Add thumbnail roundness selector in SettingsScreen

app/src/main/kotlin/it/vfsfitvnm/vimusic/enums/ThumbnailRoundness.kt

@@ -0,0 +1,28 @@
+package it.vfsfitvnm.vimusic.enums
+
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.ReadOnlyComposable
+import androidx.compose.ui.graphics.RectangleShape
+import androidx.compose.ui.graphics.Shape
+import androidx.compose.ui.unit.dp
+import it.vfsfitvnm.vimusic.utils.LocalPreferences
+
+enum class ThumbnailRoundness {
+    None,
+    Light,
+    Medium,
+    Heavy;
+
+    companion object {
+        val shape: Shape
+            @Composable
+            @ReadOnlyComposable
+            get() = when (LocalPreferences.current.thumbnailRoundness) {
+                None -> RectangleShape
+                Light -> RoundedCornerShape(2.dp)
+                Medium -> RoundedCornerShape(4.dp)
+                Heavy -> RoundedCornerShape(8.dp)
+            }
+    }
+}