feat(ui): мягкие переходы между экранами (fade + лёгкий slide)

app/src/main/java/com/radiola/MainActivity.kt

@@ -90,7 +90,16 @@ class MainActivity : ComponentActivity() {
                     NavHost(
                         navController = navController,
                         startDestination = startDestination,
-                        modifier = Modifier.padding(paddingValues)
+                        modifier = Modifier.padding(paddingValues),
+                        enterTransition = {
+                            androidx.compose.animation.fadeIn(androidx.compose.animation.core.tween(220)) +
+                                androidx.compose.animation.slideInVertically(
+                                    androidx.compose.animation.core.tween(220)
+                                ) { it / 24 }
+                        },
+                        exitTransition = { androidx.compose.animation.fadeOut(androidx.compose.animation.core.tween(160)) },
+                        popEnterTransition = { androidx.compose.animation.fadeIn(androidx.compose.animation.core.tween(220)) },
+                        popExitTransition = { androidx.compose.animation.fadeOut(androidx.compose.animation.core.tween(160)) }
                     ) {
                         composable(NavDestinations.Stations.route) {
                             StationsScreen(