fix: log image load errors and show placeholder on error

app/src/main/kotlin/com/github/gotify/Utils.kt

@@ -20,6 +20,7 @@ import kotlinx.coroutines.CoroutineDispatcher
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
+import okhttp3.HttpUrl.Companion.toHttpUrlOrNull
 import org.threeten.bp.OffsetDateTime
 import org.tinylog.kotlin.Logger
 
@@ -92,4 +93,13 @@ internal object Utils {
         context.getSystemService(ActivityManager::class.java).appTasks?.getOrNull(0)
             ?.setExcludeFromRecents(excludeFromRecent)
     }
+
+    fun redactPassword(stringUrl: String?): String {
+        val url = stringUrl?.toHttpUrlOrNull()
+        return when {
+            url == null -> "unknown"
+            url.password.isEmpty() -> url.toString()
+            else -> url.newBuilder().password("REDACTED").toString()
+        }
+    }
 }