feat(theme): Update primary app color to 419ae6

Updates the primary color of the application theme to #419ae6.

This change affects:
- The primary color definition in Color.kt and Theme.kt.
- Automatically regenerated launcher icons (ic_launcher and ic_launcher_foreground) across various densities, as they likely reference the primary theme color.

app/src/main/java/de/lxtools/noteshop/ui/theme/Color.kt

@@ -8,4 +8,5 @@ val Pink80 = Color(0xFFEFB8C8)
 
 val Purple40 = Color(0xFF6650a4)
 val PurpleGrey40 = Color(0xFF625b71)
-val Pink40 = Color(0xFF7D5260)
+val Pink40 = Color(0xFF7D5260)
+val BluePrimary = Color(0xFF419AE6)

app/src/main/java/de/lxtools/noteshop/ui/theme/Theme.kt

@@ -10,15 +10,16 @@ import androidx.compose.material3.dynamicLightColorScheme
 import androidx.compose.material3.lightColorScheme
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.platform.LocalContext
+import de.lxtools.noteshop.ui.theme.BluePrimary
 
 private val DarkColorScheme = darkColorScheme(
-    primary = Purple80,
+    primary = BluePrimary,
     secondary = PurpleGrey80,
     tertiary = Pink80
 )
 
 private val LightColorScheme = lightColorScheme(
-    primary = Purple40,
+    primary = BluePrimary,
     secondary = PurpleGrey40,
     tertiary = Pink40